Christmas

The Christmas holiday lands at an essentially random date on the Bible Calendar. There are a few places in history where the date really has been on Jesus' birthday. This article provides a date report showing the dates in question.

Background

Because the Bible Calendar is out of phase with the Roman/Christian calendar it is possible for certain occurances of Christmas to land at exactly the correct place to be an actual birthday. The following report explores. The last time this happened on the OS calendar was January 5, 1783. This would have been the Russian Christmas that year. The next time it happens is January 11, 2543.

Christmas Dates on OS Style Calendar
DayBible DateModern DateRoman DateNumber
Sun11091/8/29 AA 24 Dec 102 NS 25 Dec 855 AUC AA:4045829
1591/8/29 FE  25 Dec 102 OS 25 Dec 102 AD JD:1758672
Mon11131/8/29 AA 24 Dec 142 NS 25 Dec 895 AUC AA:4060439
1631/8/29 FE  25 Dec 142 OS 25 Dec 142 AD JD:1773282
Sat11892/8/29 AA 30 Dec 902 NS 25 Dec 1655 AUC AA:4338029
2392/8/29 FE  25 Dec 902 OS 25 Dec 902 AD JD:2050872
Sun11932/8/29 AA 30 Dec 942 NS 25 Dec 1695 AUC AA:4352639
2432/8/29 FE  25 Dec 942 OS 25 Dec 942 AD JD:2065482
Mon11972/8/29 AA 30 Dec 982 NS 25 Dec 1735 AUC AA:4367249
2472/8/29 FE  25 Dec 982 OS 25 Dec 982 AD JD:2080092
Sat12733/8/29 AA 5 Jan 1743 NS 25 Dec 2495 AUC AA:4644839
3233/8/29 FE  25 Dec 1742 OS 25 Dec 1742 AD JD:2357682
Sun12773/8/29 AA 5 Jan 1783 NS 25 Dec 2535 AUC AA:4659449
3273/8/29 FE  25 Dec 1782 OS 25 Dec 1782 AD JD:2372292
Fri13534/8/29 AA 11 Jan 2543 NS 25 Dec 3295 AUC AA:4937039
4034/8/29 FE  25 Dec 2542 OS 25 Dec 2542 AD JD:2649882
Sat13574/8/29 AA 11 Jan 2583 NS 25 Dec 3335 AUC AA:4951649
4074/8/29 FE  25 Dec 2582 OS 25 Dec 2582 AD JD:2664492

The other type of Christmas dates follows a study of the NS calendar. The following provides the dates when this happened. Christmas in 1784 is the last time that Christmas fell on the Biblical anniversary of Jesus' birthday in the English world. It doesn't happen again until December 25, 2591.

Christmas Dates on NS Style Calendar
DayBible DateModern DateRoman DateNumber
Tue11125/8/29 AA 25 Dec 136 NS 26 Dec 889 AUC AA:4058249
1625/8/29 FE  26 Dec 136 OS 26 Dec 136 AD JD:1771092
Wed11165/8/29 AA 25 Dec 176 NS 26 Dec 929 AUC AA:4072859
1665/8/29 FE  26 Dec 176 OS 26 Dec 176 AD JD:1785702
Wed11933/8/29 AA 25 Dec 943 NS 20 Dec 1696 AUC AA:4352999
2433/8/29 FE  20 Dec 943 OS 20 Dec 943 AD JD:2065842
Thu11950/8/29 AA 25 Dec 960 NS 20 Dec 1713 AUC AA:4359209
2450/8/29 FE  20 Dec 960 OS 20 Dec 960 AD JD:2072052
Thu11973/8/29 AA 25 Dec 983 NS 20 Dec 1736 AUC AA:4367609
2473/8/29 FE  20 Dec 983 OS 20 Dec 983 AD JD:2080452
Fri12735/8/29 AA 25 Dec 1744 NS 14 Dec 2497 AUC AA:4645559
3235/8/29 FE  14 Dec 1744 OS 14 Dec 1744 AD JD:2358402
Sat12775/8/29 AA 25 Dec 1784 NS 14 Dec 2537 AUC AA:4660169
3275/8/29 FE  14 Dec 1784 OS 14 Dec 1784 AD JD:2373012
Sun13583/8/29 AA 25 Dec 2591 NS 8 Dec 3344 AUC AA:4954919
4083/8/29 FE  8 Dec 2591 OS 8 Dec 2591 AD JD:2667762
Sun13606/8/29 AA 25 Dec 2614 NS 7 Dec 3367 AUC AA:4963319
4106/8/29 FE  7 Dec 2614 OS 7 Dec 2614 AD JD:2676162

These reports are a wonderful demonstration of the quirks of parallel calendars. If you understand these reports and what drives their structure you probably have the calendar issues understood.