In this festive season, many days are celebrated, Christmas, Hanukah, Eid, etc. Well now, there's Apollo 8 Day. The 21st December 1968 was the launch of the first ever manned Lunar mission. This festive season lasts 7 days, and so we have this carol.

On the first day of Apollo 8 day, my true love gave to me,
A Saturn V on an ML.
On the second day of Apollo 8 day, my true love gave to me,
Two LOI burns,
and a Saturn V on an ML.
On the third day of Apollo 8 day, my true love gave to me,
Three CM couches,
Two LOI burns,
and a Saturn V on an ML.
On the fourth day of Apollo 8 day, my true love gave to me,
Four RCS thruster quads,
Three CM couches,
Two LOI burns,
and a Saturn V on an ML.
On the fifth day of Apollo 8 day, my true love gave to me,
Five F-1 engines,
Four RCS thrusters quads,
Three CM couches,
Two LOI burns,
and a Saturn V on an ML.
On the sixth day of Apollo 8 day, my true love gave to me,
Six Hasselblad cameras,
Five F-1 engines,
Four RCS thruster quads,
Three CM couches,
Two LOI burns,
and a Saturn V on an ML.
On the seventh day of Apollo 8 day, my true love gave to me,
Seven mid-course corrections,
Six Hasselblad cameras,
Five F-1 engines,
Four RCS thruster quads,
Three CM couches,
Two LOI burns,
and a Saturn V on an ML.

More festive cheer coming soon...