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         Eclipse Simulation Software  EmapWin.EXE  Document               
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                                      EmapWin  Ver. 3.50   2022.08.01
                                      Copyright (C) 2000-2022 Shinobu Takesako
                                      takesako@mrj.biglobe.ne.jp
                                      http://www.kotenmon.com

1. General

The Emapwin Eclipse simulation software has the following main features.

1) Display of the Eclipse Map
  The Emapwin calculates draw the following lines on the map.
  1) Curve of the central line of the umbra
  2) Curve of the northern and southern limit of the umbra
  3) Curve of the northern and southern limit of the penumbra
  4) Curve of the rising and setting
  5) Curve of the maximum eclipse at sunrise and sunset
  6) Curve of the maximum eclipse
  7) Curve of the equal magnitude

  The map can be magnified to display the detail of the eclipse.
  The several parameters such as saros number, time and place of the maximum 
  Eclipse also indicated on the map.
  
2) Display of the table of the Central line

  The Emapwin makes a table indicates the northern, central and southern limit
  of the total or annular eclipse by the parameter of the longitude. So it is 
  easy to draw the line on the map.
  
3) Display of the Local Circumstance
   
  The Emapwin calculate the local circumstance such as maximum magnitude,
  time , altitude of the sun and direction at the given place. The Emapwin 
  also simulate and display the eclipse at the given place.

4) Display of the Sky at Max. Magnitude
   
  The Emapwin display the Sky view at maximum magnitude if that point is in 
  the area of the total eclipse.

5) Moon Lim adjustment calculation

  The Emapwin calculates moon lib adjustment base on LRO/NASA satellite data.
   
 The Emapwin calculates based on the Bessel elements attached with the
software. The Bessel elements for the eclipse from 13000BC to 169999AD 
is attached.

 The data format of the Bessel elements is same as the Bessel elements of
"ELEMENTS OF SOLAR ECLIPSES:1951-2200" by J. Meeus(1989,Willmann-Bell,Inc.).

 The Emapwin is based on the Gmap(Earth Globe draw software) made by
Mr. C. Wakaura. 

1.1  Development Software for Emapwin
    Software : Microsoft Visual Studio 2008 
    OS       : Windows10/64bit

1.2 Version up information

1.2.1 The improved point from the Version 3.40 to Version 3.50
  1) Delta T value is revised (upto big. of 2022)
     The delat T of the furure was revised based on current values.

2. Release files and Installation

2.1 Normal Release (emapwin_eng_3.50.zip)

 The following files are included in the emapwin_eng_3.50.zip file
  1) README        This file
  2) EMAPWIN.EXE   Executable file for Emapwin
  3) EMAP.DOC      Document file
  4) EC****.PRN    Bessel elements for each bicentennial
  5) ECHEAD.PRN    Header file for special file output
  6) LOCATION.NEW  Location data for the city
  7) CIA's River/Coast line/data: *.cbd
  8) globe04.dat   4minuts Earth elevation data sampled from GTOPO30
                         (180x15x360x15x2byte = 29.160MB)
 9) color.txt        Color palette data for earth globe map
 10) LRO.dat       Moon elevation data from LRO/NASA
                        (180x16x360x16x2byte = 33.1776MB)

 The all files should be extracted to same directly, but "C" directory is not recommended.
 There are no other setting is necessary.
 The emapwin start up with colored map. If you feel slow, please check the [Blank Map] in the
 Display mode menu at menu bar.

3. How to use Emapwin

3.1 Startup

 The double click the  EMAPWIN.EXE file on the explore.

3.2 Parameter Setting

3.2.1 Display Mode Menu

   1)Display Area: The following setting can be made.
               - Display on the Globe
               - Display on the Asian Map
               - Display on the European Map
               - Display on the selected point
                    Longitude of the Center(from -180 to 180 deg.)
                    Latitude of the Center(from  -90 to -90 deg.)
                    Magnify 
                    
                    If you want to display the Japan at center of the map.
                       Longitude = 135
                       Latitude =  35
                       Magnify  =   2
      Options:
         - Display of Longitude and latitude line grid:
            The period is 15 deg. for log. and 10 deg. for lat.
         - Display Speed: 
            The speed to draw the eclipse lines. The eclipse line is drew
            with this parameter as a point.
         - File Output:
            This option produce files for google map.
        -Delta T adjustment:
            The delta T can be adjusted by using this parameter.
            

   2)Display of the Northern & southern limit and central line
   
        Start Longitude: 90 deg West is -90.
        Step          : degree
        
        The Emapwin display 13 points of calculation from the
        start longitude with steps.
        
        This function does not support the special eclipse such as
        two central points at same longitude.
        
   3)Display of the Local circumstance
      
      The Emapwin display the time of the start, maximum and end of the 
      eclipse at specific place.
      The some historical sites are already registered in LOCATION.NEW file.
      The city which is registered in this file can be selected by the pull
      down.
      
      The Pm is the angle between the line from the center of the 
      sun to the moon and line to from the center of the sun to the 
      north measured clockwise from the north.
      
      The Z is the angle between the line from the center of the 
      sun to the zenith and line from the center of the sun to the 
      center of the moon measured clockwise from the zenith line.
      
      The AZ is the azimuth angle from the north to the center of the
      sun measured clockwise from the north.

3.2.2 Search Mode Menu

     1) All          : No Search Filter
     
     2) Eclipse Type : To be searched with following filter.
                  1. Partial Eclipse
                  2. Central Total Eclipse
                  3. Central Annular Eclipse
                  4. Annular-Total Eclipse
                  5. Non Central-Total Eclipse
                  6. Non Central-Annular Eclipse

     3) Site location and Magnitude: To be searched with site and magnitude.
                  If the maximum magnitude of the eclipse at selected site
                  is more than selected value and altitude of the sun is 
                  is more than -15 degree, the eclipse will be displayed.
     
     4) Saros number: To be searched with Saros number.
                   If the saros number of the eclipse is same as selected
                   value within 400 years from the start year, the eclipse
                   will be displayed.
                    
                   The appearence times of Saros number before -300 is 
                   counted from year -13000.

3.3 Time Set Menu

     1) Year: Set the year which star the search.
              The years before 1AD, please set as follows.
                  BC1   =  0
                  BC2   = -1
                  BC100 = -99
                  
     2) Month: Set the month which start the search.

3.4 Tool Bar

     The following functions are currently supported.
     
     1)"Previous Eclipse": The previous eclipse to be shown with filter.
                       The period to be searched is as follows.
                       No filter        :  2 years (fix)
                       Eclipse type     : 20 years (default)
                       Site and Magnitude: 50 years (default)
                       Saros            : 20 years (fix)
     2)"Next Eclipse": The next eclipse to be shown with filter.
                       The eclipse will be searched with the condition
                       set in the search mode menu.
     3)"Eclipse List": The eclipses can be listed out by this function.
                       The eclipse will be searched with the condition
                       set in the search mode menu.
                       The maximum number of the eclipse is first 100.
                       The each eclipse on the list can be shown by the
                       draw button.
     4)"Magnify"     : The map will be magnified with 1.41 times at Map 
                       magnify mode.(The left double click transfers to
                       map magnify mode.)
                       
     5)"Reduction"   : The map will be reduced with 1.41 times at Map
                       magnify mode.
     6)"Magnify mode release" : The map magnify mode will be released.
     7)"Local Circumstance" : The local circumstance to be displayed.
     8)"Return to Map mode"  : The display to be returned to map from
                              Central line or local circumstance display.
     9)"Sky at Max. Magnitude":The Sky view at maximum magnitude will 
                                be displayed if that point is in the area 
                                of the total eclipse 
    10)"Moon Lib": The moon lib adjustment can be done within the
                          Total eclipse area.

3.5 Mouse Click Function

     1) Left click: Indicates location (log. /lat.) of the point.
     2) Left double click: Display the map with clicked point as a center.
     3) Right double click: Display the local circumstance with clicked point.

3.6 Earth Globe map display 

    Emapwin display the nearest eclipse from that day.
    
3.7 Others

  1) The local mean time(LMT) is calculated with (UT+site lon./15)
  2) The local standard time(LST) is calculated with 
     (UT+int(site lon./15+0.5)).
     
  Therefore it may differ the actual local time.   

4. Calculation method and data

4.1 Bessel elements

    The Bessel elements is calculated based on the following method.
    Sun & Moon position : DE422 by JPL Ephemeredes 
    Calculation Method:US NAVAL OBSERVATORY "EXPLANATORY SUPPLEMENT TO 
                   THE ASTRONOMICAL EPHEMERIS,1974"

	Basic parameters for Bessel elements calculation
	----------------------------------------------
	Solar Parallax 				:     8.794144(sec)
	Solar semi-diameter at mean distance	:   959.630   (sec)
	Earth's Equatorial radius			:  6378.136   (km)
	1 astronomical unit			:     1.4959787066e8 (km)
	k1(Penumbra) 				:     0.2725076
	k2(Umbra)    				:     0.2722810

    The difference of the calculation results between the Emapwin and
    NASA is point few seconds for recent eclipses.
    
    
4.1 Explanation of the Bessel parameter in the "EC****.PRN" file.

 The detailed explanation will be find in the "ELEMENTS OF SOLAR ECLIPSE".

1)First line

YEAR,MONTH,DAY :Date of the Maximum eclipse(ET)

TYPE           :Type of the eclipse.
                  1. Partial Eclipse
                  2. Central Total Eclipse
                  3. Central Annular Eclipse
                  4. Annular-Total Eclipse
                  5. Non Central-Total Eclipse
                  6. Non Central-Annular Eclipse

MAG            :Maximum magnitude of the partial eclipse.

r(Gamma)       :The minimum length between the center of the earth and 
                center of the moon's shadow on the Bessel plane.
                If the minus the , the shadow pass the south of the
                center of the earth.

JD             :Julius Date of the Maximum eclipse (ET).

K              :Number of the New moons from the Jan. 6th, 2000.

SAROS          :Saros Number
                The algorithms are based on the " V.D.BERGHuPERIODICITY 
                AND VARIATION OF SOLAR(AND LUNAR) ECLIPSESv" and 
                J.MEEUSuCANON OF SOLAR ECLIPSES(1898-2510)v.

T0             :The hour at t = 0 (ET) at following equations.


2) Second Line


X0,X1,X2,X3    :  X elements, X = X0 + X1*t + X2*t*t + X3*t*t*t
Y0,Y1,Y2,Y3    :  Y elements, Y = Y0 + Y1*t + Y2*t*t + Y3*t*t*t
D0,D1,D2       :  D elements, D = D0 + D1*t + D2*t*t

3) Third Line

M0,M1          :  M elements, M = M0 + M1*t
L10,L11,L12    : L1 elements, L1=L10 +L11*t +L12*t*t
L20,L21,L22    : L2 elements, L2=L20 +L21*t +L22*t*t
tanf1          : tan f1
tanf2          : tan f2

4.3 Calculation method for the eclipse lines

    The eclipse lines are calculated based on the following method.
    Calculation Method:US NAVAL OBSERVATORY "EXPLANATORY SUPPLEMENT TO 
                   THE ASTRONOMICAL EPHEMERIS,1974"
    Reference          : J.MEEUS "ELEMENTS OF SOLAR ECLIPSES:1951-2200"

4.4 Calculation method for the local circumstances

    The local circumstances are calculated based on the following method.
    Calculation Method: J.MEEUS "ELEMENTS OF SOLAR ECLIPSES:1951-2200"
    Reference          : I. Hasegawa"Introduction of the astronomical
                                     Calculation"

4.5 Calculation method for Central line with parameter of longitude

    The Central line and northern/southern limit of total eclipse are 
    Calculated based on the following method.
    Calculation Method: J.MEEUS "ELEMENTS OF SOLAR ECLIPSES:1951-2200"

4.6 Delta T

    The delta used in the Emapwin is mainly based on the value 
    introduced by F.R.STEPHENSON.

1) From year 1620 to 2010

   The Delta T is calculated based on the table in the "ASTRONOMICAL 
   ALMANAC".

2) Before year 1620

2-1)Between 1620 and -700
    The Delta T is from table 1 of the  "HISTORICAL VALUES OF THE 
   EARTH'S CLOCK ERROR DELTA T AND THE CALCULATION OF 
   ECLIPSES"(2004&5) by F.R.STEPHENSON.

2-2) Before -800

   The Delta T is calculated by the following formula from  "HISTORICAL 
   VALUES OF THE EARTH'S CLOCK ERROR DELTA T AND THE CALCULATION 
   OF ECLIPSES"(2004&5) by F.R.STEPHENSON

   delat T = -20+32 x ( (year-1820)/100)^2     year<-800

 2-3) From -800 to -700

   Interporation between 2-1) and 2-2)

3) from 2100 to 3205N (2022/08/01 revised)
   The deltaT is calculated as follows.(Symmetry to year AD 1830)

   delatT(year)=deltaT(3660-year) - 37.0  (sec)
   If year is AD2500, 
   delatT(2500)= deltaT( AD1160)-37.0 (sec)

4) From 2010 to 2100 (2016/10/12 revised)

 Base on the valiation from 1960s to current,
 the value is revised and forcasted.
 In case of ver. 3.5, value upto 2022 is mesured value.

 The modified vale is as follows.
  ------------------------------
year  ver.3.2 ver.3.4  ver.3.5 
-------------------------------
2010	66.1 	66.1 	66.1 
2011	66.4 	66.3 	66.3 
2012	66.7 	66.6 	66.6 
2013	67.0 	66.9 	66.9 
2014	67.3 	67.3 	67.3 
2015	67.6 	67.6 	67.6 
2016	67.9 	68.1 	68.1 
2017	68.2 	68.6 	68.6 
2018	68.5 	69.0 	69.0 
2019	68.8 	69.5 	69.2 
2020	69.1 	69.9 	69.4 
2021	69.5 	70.8 	69.4 
2022	69.9 	71.7 	69.3 
2023	70.3 	72.6 	69.3 
2024	70.7 	73.5 	69.5 
2025	71.1 	74.5 	69.8 
2026	71.5 	75.4 	70.0 
2027	71.9 	76.3 	70.3 
2028	72.3 	77.2 	70.5 
2029	72.7 	78.1 	70.8 
2030	73.1 	79.0 	71.0 
2040	79.1 	90.4 	74.3 
2050	86.0 	99.3 	78.3 
2060	94.8 	104.4 	83.3 
2070	103.6 	106.9 	90.1 
2080	112.4 	111.4 	98.3 
2090	121.2 	119.9 	106.8 
2100	130.0 	130.0 	115.0 
2200	230.0 	226.0 	211.0 
2300	370.0 	366.0 	351.0 
2400	570.0 	568.0 	553.0 
2500	870.0 	858.0 	843.0 
2600	1290.0 	1259.9 	1244.9 
2700	1829.9 	1799.9 	1784.9 
2800	2499.9 	2481.9 	2466.9 
2900	3279.9 	3277.9 	3262.9 
3000	4159.8 	4159.8 	4144.8 
3100	5099.8 	5105.8 	5090.8 
3200	6069.8 	6073.9 	6068.7 
3300	6989.0 	6989.0 	6989.0 


5) After 3205
   The Delta T is calculated by the following formula from  "HISTORICAL 
   VALUES OF THE EARTH'S CLOCK ERROR DELTA T AND THE CALCULATION 
   OF ECLIPSES"(2004&5) by F.R.STEPHENSON

   delat T = -20+32 x ( (year-1820)/100)^2     year<-800

6) Delta T for Moon's position calculation

   Because the DE406/422 uses around -26"/cy2 tidal value, no adjustment is made.


4.7 Location data of the Ancient cities

The following site data is registered in the attached "Location.new"
file. The point will be indicated on the map at magnify mode.
The some data is from the city location list in the P.V.NEUGEBAUER
"ASTRONOMISCHE CHRONOLOGIE".

 CITY NEME           Lon.     Lat. 
 ---------          -----    ------

Japan
-----
ASUKA               	135.8    	34.5 
NARA                 	135.8    	34.7 
KYOUTO            	135.73   	34.98
KAMAKURA        	139.57   	35.32
TOKYO/EDO       	139.75   	35.65
YASU                 	130.5    	33.5 

Asia
----
QIFU                 	117.05  35.65
LUOYANG           	112.4    34.8 
XI'AN                	108.9    34.3 
BEIJING             	116.4    39.9 
NANJING            	118.8    32.05
KYONGJU           	129.2    35.8 
JYOFURI            	126.9    36.3 
PYONGYANG     		125.8    39.0 

Europe/Africa/Middle east
--------------------------
CARTHAGE         	10.3    36.8 
ROME                 	12.5    41.9 
SYRACUSE          	15.2    37.1 
ATHENS             	23.7    38.0 
HELLESPONT      	26.4    40.2 
ALEXANDRIA      	29.9    31.2 
MEMPHIS           	31.2    29.9 
THEBES              	32.6    25.7 
JERUSALEM        	35.2    31.8 
UGARIT             	35.78   35.62
NINEVEH            	43.2    36.3 
BAGDAD            	44.4    33.3 
BABYLON           	44.5    32.5 
UR                    	46.2    31.0 

4.8 Biography

The following books are the reference for making the Emapwin. 

Japanese
--------
- Kuniji Saito "Kotenmongaku" 1989, Kouseisyakouseikaku
               "Kotenmongaku eno michi" 1990, Harachobou
               "Kotenmongaku no sannpomichi" 1992, kouseisyakouseikaku
               Other papers in "Kagakushikenkyuu"
- Toshio Watanabe "Nihon-Chousen-Chugoku nissyoku-gessyoku-syokuhouten"
                   1979, Yuzannkaku
                  "Synnjyu no nisyokku" 1958 Kouseisyakouseikaku
- Kanda Shigeru "Nihontennmonshiryou" 1935, Kouseisya
- Ichirou Hasegawa "Tenmonkeisan-nyuumon" 1986, Kouseisyakouseikaku
- Mitsuru SOMA & others "Northen Limit of the Annual Solar Eclipse on 2012 May 21 
                                      in Japan",2012, web version (in Japanese)

Overseas
--------
- J.MEEUS "ASTRONOMICAL ALGORITHMS" 1991,Willmann-Bell,Inc.
          "ELEMENTS OF SOLAR ECLIPSES:1951-2200" 1989,Willmann-Bell,Inc.
          "CANON OF SOLAR ECLIPSES(1898-2510)" 1966,PERGAMON PRESS.
- H.MUCKE and J.MEEUS "CANON OF SOLAR ECLIPSES(-2003 to 2526)" 1992,2nd.
                         Astronomisches Buro, Wien.
- FREAD ESPENAK "FIFTY YEAR CANNON OF SOLAR ECLIPSES:1986-2035" 1987,
                    NASA(SKY PUBLISHING CORPORATION).
- M & J CHAPRONT "LUNAR TABLE AND PROGRAMS FROM 4000BC TO AD8000" 1991,
                    Willmann-Bell,Inc.
- US NAVAL OBSERVATORY
       "EXPLANATORY SUPPLEMENT TO THE ASTRONOMICAL EPHEMERIS" 1974 
- G.V.D.BERGH "PERIODICITY AND VARIATION OF SOLAR(AND LUNAR) ECLIPSES"
         1955,Netherlands.
- F.R.STEPHENSON AND M.A. HOULDENuATLAS OF HISTORICAL MAPS,EAST ASIA 
         1500BC-AD1900v1986, Cambridge University Press.
- F.R.STEPHENSON "APPLICATION OF EARLY ASTRONOMICAL RECORDS" 1978,
         Oxford University Press.
- F.R.STEPHENSON "HISTRICAL ECLIPSES AND EARTH'S ROTATION" 1997,
         Cambridge University Press.
EF.R.STEPHENSON"HISTORICAL VALUES OF THE EARTH'S CLOCK ERROR 
         DELTA T AND THE CALCULATION OF  ECLIPSES" JHA,xxxv(2004)
EF.R.STEPHENSON"HISTORICAL VALUES OF THE EARTH'S CLOCK ERROR 
         ADDENDUM" JHA,xxxvi(2005)
- T.R.OPPOLZER "CANON DER FINSTERNISSE" 1887, Wien.
- T.R.OPPOLZER "CANON OF ECLIPSES" Reprint,1962,Dover Publication,Inc.
- F.K.GINZEL "SPEZIELLER KANON DER SONNEN UND MONDFINSTERNISSE"
         1899,Berlin MAYER & MULLER.
- W.CHAUVENET "SPHERICAL AND PRACTICAL ASTRONOMY" 5th ed.,
         J.B.LIPPINCOTT & CO.
- F.R.STEPHENSON "THE EARLIEST KNOWN RECORD OF SOLAR ECLIPSE" 
         NATURE,VOL228, 14 NOV. 1970
- J.F.A.SAWYER & F.R.STEPHENSON "A TOTAL ECLIPSE OF THE SUN OBSERVED
         IN ANCIENT UGARIT" BULLETIN OF THE SCHOOL OF ORIENTAL AND
         AFRICAN STUDIES, VOL.XXXIII PART.3 1970
- T. DE JONG & W.H.VAN SOLDT "THE EARLIEST KNOWN SOLAR ECLIPSE RECODE
         REDATED" NATURE,VOL338, 16 MARCH 1989
- CHRISTOPHER B.F. WALKER "ECLIPSE SEEN AT ANCIENT UGARIT"
         NATURE,VOL338, 16 MARCH 1989
- K.M.BORKOWSKI "ELP2000-85 AND THE DYNAMICAL TIME - UNICERSAL TIME
         RELATION" ASTRON.ASTROPHYS. 205,L8-L10,1988
- JPL "THE JPL LUNAR AND PLANETARY EPHEMERIS CDROM"  1997,
                     Willmann-Bell,Inc.

5. License agreement

1) LICENSE
A non-exclusive license is granted to use the Software free of charge if 
your use of the Software is exclusively at home for non-commercial purposes. 

2) DISCLAIMER OF WARRANTY
This software is provided on an "AS IS" basis, without warranty of any kind,
including without limitation the warranties of merchantability, fitness for 
a particular purpose and non-infringement. The entire risk as to the quality 
and performance of the Software is borne by you. Should the Software prove 
defective, you assume the entire cost of any service and repair. 

3) TITLE
Title, ownership rights, and intellectual property rights in the Software 
shall remain in Shinobu Takesako except Earth elevation data(GTOPO30) 
, Moon elevation data(LRO/NASA) and the Geographical data supplied 
by Mr. Sheridan Williams.


6. Revision History of Emap/Emapwin

  October   18, 1992   	:  Emap(Dos) Ver. 1.0 Completed
  December  3, 1992    	:  Emap Ver. 2.01 released for public use
  April         8, 1996       	:  Emap Ver. 2.32 released for Freeware CD
  April         5, 1999    	:  Emapwin Ver. 0.1 Completed
  May        13, 1999    	:  Emapwin Ver. 1.01 Released (Japanese Version)
  May        20, 1999    	:  Emapwin Ver. 1.01 Released (English  Version)
  February 14, 2000    	:  Emapwin Ver. 1.10 Released (Japanese Version)
  February 14, 2000    	:  Emapwin Ver. 1.10 Released (English  Version)
  March     25, 2000    	:  Emapwin Ver. 1.11 Released (English  Version)
  April       15, 2000    	:  Emapwin Ver. 1.21 Released (English  Version)	
  November 10, 2012	:  Emapwin Ver 2.11 Release (English Version)
                                          - Addition of Contact time correction for moon limb
  November 17, 2012	:  Emapwin Ver 2.12 Release (English Version)
                                          - Delta T is adjusted for DE422
  June 8, 2013	             :  Emapwin Ver 2.13 Release (English Version)
                                          - Lim correction based on 1/16 deg file released
                                             by LRO project
 September 29, 2013	:  Emapwin Ver 3.00 Release (English Version)
                                       - DE431 is supported(BC13000 to AD17000)
                                       - No minus saros number
 September 30, 2013	:  Emapwin Ver 3.01 Release (English Version)
                                       - Bessel elements was corrected.
 June 1st, 2014                  :Emapwin Ver. 3.10 Release (English Version)
                                       - Colored Map is supported based on GTOPO30
 June 4, 2014                    :Emapwin Ver. 3.11 Release (English Version)
                                       - Map Draw method for Colored Map is changed.
 March 21, 2015         :Emapwin Ver 3.20 (English Version)
                           - Unique number Saros number are assigned.(-349 to +698) 
                           - Equation for Nutation, Precession and Sidereal Time were
                             revised based on latest IAU definition.

 October 13, 2016        :Emapwin Ver 3.30 (English Version)
                           - Date dispay(LST base) in Local Circumstance
                           - Delta T value for future is revised (Current to AD3200)
                           (Only exe. file was modfied.)
 December 15, 2018        :Emapwin Ver 3.40 (English Version)
                           - The problem of NEXT/BACK function in Local Circumstance was fixed.
                           - Delta T value for 2017-2020 are revised. 
                           (only Emapwin.exe file was modfied.)

 August 1, 2022          :Emapwin Ver 3.50 (English Version)
                           - Delta T value are revised. 
                           (only Emapwin.exe file was modfied.)

7. Credit
   Thanks for
   1)The Map drawing software original source is supplied by Mr. Chikara Wakaura.

8. Finally

 If you have a comment, please send me a mail.
 
                                         Thanks

