by Anura Guruge
Related Christmas posts:
>> Weekly calendar based on moon phases.
++ 2015: Easter & Passover on same weekend.
++ 2015: Father’s Day on Summer Solstice.
**** Search ‘Christmas’ for many, many other related posts >>>>
++++ Check Category ‘Astronomy’ for other related posts >>>>
Christmas this year, i.e., 2015, falls on the Full Moon.
This is rather special.
It does NOT happen as often as you think.
IF you have an exceptional memory for matters such as this you may believe that you actually remember this happening not that long ago — say 2004, 11 years ago. Actually the Full Moon in 2004 was on Boxing Day, i.e., December 26th, rather than the 25th.
The last time Christmas was on the Full Moon was in 1977.
Statistically a full moon will fall on a specific date, in this case Christmas, every 18.61 years. But Leap Years messes this up. Hence the 38 year gap in this case (essentially twice the ’19’ year gap).
The next Christmas on a Full Moon will be in 2034 — 19 years from now. Next one will be 2053.
So this is SPECIAL. Enjoy.