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Hi everybody.

Each successive past civilization utilized a round figure for a solar year that is in agreement with of 360 days perfect tropical year. For instance, the Egyptians used an round 365-day year, the Romans a 365.25-year, our modern Gregorian calendar has a 365.2422-year. In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86400 SI seconds each.

The ancient principle ; a day for a year is synchronization between systems[364,5 [tropical year and 365,25(Julian year)] by adding 1 month Adar II.

Identical combination of astronomical positions repeats only every 40500 years.

40500/1,0125(ratio)=40000

40500 years/18(eclipse cycle)/100=22,22222222222222

40500 (years)/1,0125(ratio)=40000(years)

365,25(Julian year)*40,5(synchronization between systems)=14792,625

27(sideral month)*12=324 days

324/1,0125(ratio)=320
320*1,5=480
324*1,5=486

320/360 days perfect tropical year=0,8888888888888889
324/360 days perfect tropical year=0,9
360*1,0125(ratio)=364,5days(tropical year)

360,7407407407407 *1,62(ratio)=584,4(synodic period of Venus or 20 synodic months ;type a)
584,4*10=5844 (sidereal rotation period Venus)

360,7407407407407/8=45,09259259259259
360,7407407407407*1,0125(ratio)=365,25

360,7407407407407*86400=31168000
31168000/87660=355,5555555555556

355,5555555555556*(365,25*1,0125) / 225=584,4
355,5555555555556*(365,25*1,0125) / 22,5=5844 (sidereal rotation period Venus)

365,25(Julian year) *1,6(ratio)=584,4
584,4/20=29,22 (month sinodical ; type a)
29,22 (month sinodical ; type a)*12,5=365,25(Julian year)

29,22 (month sinodical ; type a)*1,0125(ratio)=29,58525(month sinodical type b)

29,58525(month sinodical type b)*12=355,023(lunar year)
355,023/0,972=365,25(Julian year)

355,023*111,1111111111111=39447
40500-39447=1053
1053/1,0125=1040

1053-1040=13

1053/81=13
1040/80=13

355,5555555555556*1,0125=360(perfect tropical year)
355,5555555555556*87660=85333,33333333334*365,25

584,4(synodic period of Venus or 20 synodic months ;type a)/12,96=45,09259259259259
45,09259259259259*8=360,7407407407407

584,4(synodic period of Venus or 20 synodic months ;type a) /20=29,22
29,22*1,0125(ratio)=29,58525 (synodic months ;type b)
29,58525 (synodic months ;type b)*12=355,023(lunar year)
355,023(lunar year)/0,972=365,25 (31 december)
365,25 (31 december) /12=30,4375
30,4375/3=10,14583333333333

365,25 (31 december)-10,14583333333333=355,1041666666667(winter solstice)
365,25 (31 december)/4=91,3125
365,25 (31 december)/4,05=90,18518518518519
365,25 (31 december)/4,5=360,7407407407408

355,1041666666667(winter solstice)/0,9722222222222222=365,25
365,25/360=1,014583333333333

1,014583333333333*259,2=262,9799999999999(autumn equinox)

262,9799999999999(autumn equinox)*2=525,9599999999998
525,9599999999998*1,111111111111111(ratio)=584,4days(20 months sinodic)
584,4(synodic period of Venus or 20 synodic months ;type a)/1,111111111111111(ratio)=525,96
525,96/0,96=547,875
547,875/1,0125=541,1111111111112

525,96/2=262,98(autumn equinox)
262,98(autumn equinox)/8,64(month)=30,4375 days

30,4375*12 month=365,25 days(Julian year)

other examples: 262,5(autumn equinox)/8,64(month)=30,38194444444444
30,38194444444444*12=364,5833333333333(tropical year)
262,44(autumn equinox)/8,64(month)=30,375
30,375*12=364,5(tropical year)
264,6(autumn equinox)/8,64(month)=30,625
30,625*12=367,5(perihelion)
367,5(perihelion)*365,25(Julian year)=134229,375
134229,375/40,5/365,25(Julian year)=9,074074074074074

9,074074074074074*40=362,962962962963
362,962962962963* 1,62(ratio)=588(synodic period of Venus or 20 synodic months ;type a)

9,074074074074074*40,5=367,5(3 January ; perihelion)
367,5(3 January ; perihelion)*1,6(ratio)=588(synodic period of Venus or 20 synodic months ;type a)

14792,625/27(sideral month***)=547,875
547,875/1,0125=541,1111111111111
541,1111111111111/1,5=360,7407407407407***
360,7407407407407 / 0,7407407407407=487
487*30,375=14792,625
487-1=486
486*30,375=14762,25
In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86400 SI seconds each.

14792,625/584,4=25,3125
25,3125*24=607,5 (ancient principle ; a day for a year)

607,5 (ancient principle ; a day for a year) synchronization between systems by adding 1 month Adar II.
Synchronization between systems by adding 1 month II Adar. The next synchronization takes place in 567 BC.)

607,5 (ancient principle ; a day for a year) synchronization between systems by adding 1 month Adar II.) + 40,5=648

Monday 1 January 4713(Julian Date)+2015 December 31=6728
6728*365,25=2457402

607,5 (ancient principle ; a day for a year) synchronization between systems by adding 1 month Adar II.) +1984,5 c.e( Adar II ; see ; compare the first full moon after the Vernal Equinox; ancient date 14 Nisan)=2592

2592/40,5(synchronization between systems)=64
2551,5/40,5(synchronization between systems)=63

64*63=4032
4032/18(eclipse cycle)=224
224*10=2240
225*18(eclipse cycle)=4050
4050*10=40500

40500/27,77777777777778=1458
1450/360=4,05
27,77777777777778(Sidereal month)*360=10000

27,77777777777778(Sidereal month)*13,5=375 days
375*1,008=378 days

1260*0,288=362,88
1250*0,288=360
1251*0,288=360,288

1458 (four-year cycle)/1500(four-year cycle)=0,972
1458,333333333333(four-year cycle)/1512(four-year cycle)=0,9722222222222222

607,5 (ancient principle ; a day for a year) synchronization between systems by adding 1 month Adar II.) - 40,5=567b.c.e(II Adar)

7*364,5(tropical year)=2551,5
2551,5/40,5(synchronism between systems)=63

567b.c.e(II Adar)-2551,5=1984,5 [full moon ; 14 Nisan (14/15 april)]. An eclipse of the Moon (or lunar eclipse) can only occur at Full Moon, and only if the Moon passes through some portion of Earth's shadow.

567 / 0,9722222222222222=583,2
567 * 1,111111111111111=630
630-607,5=22,5
648-18=630

607,5 (ancient principle ; a day for a year) synchronization between systems by adding 1 month Adar II.)+2015 December 31=2622,5

14762,25/8,333333333333333=1771,47
14762,25/40,5=364,5

1771,47*2=3542,94
3542,94*3600=12754584
12754584 /3600/3600=0,98415
360*0,98415=354,294(lunar year)
354,294(lunar year)/0,972=360*1,0125(ratio)=364,5(tropical year)

I do not speak English, that's why I use a google translator. I hope that in time this will be more accurate.Greetings to all of you from Poland.

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