On The Subject of Condensed Calendars

It’s beginning to look a lot like Dec 25… or is it Dec 26-Jan 1…? Oct 31?

Timestamp Mar 22 – Jun 21 Jun 22 – Sep 21 Sep 22 – Dec 21 Dec 22 – Mar 21
Day of Month 1–10 11–20 21–31 1–10 11–20 21–31 1–10 11–20 21–31 1–10 11–20 21–31
LED
color
Green Jan Nov Aug Jun Mar Dec Feb Jul Sep May Oct Apr
Yellow Dec Jun Apr Oct May Feb Aug Nov Mar Jul Jan Sep
Red Feb Jul Oct Jan Sep Aug Dec Apr Jul Mar Nov Jun
Blue May Mar Sep Apr Jul Nov Jun Oct Jan Dec Aug Feb

If a date is formatted as #/#, use the 1st # if the correct month has that many days, otherwise use the 2nd #.

Last Digit of Serial (use first digit if holiday is Apr 1)
Holiday0123456789
Jan 417241520130/9286714
Jan 615131/7172630/8249325
Jan 2619524329/1281830/41312
Feb 2 Click any day in the correct month 3 times. You will receive 2 fake strikes before the module is solved.
Feb 14116221419272071623
Mar 1722818132112310201
Apr 1*12345678910
Apr 2223132530/341127152131/5
Apr 29-May 682017162316122245
May 529/3192715916191493
Jun 21029/212241520527257
Jul 14221461181931/7232826
Oct 3427822101413281321
Oct 314162115276241329
Nov 5261632629/71822251711
Nov 111472317531/12251711
Dec 2412211718244141020
Dec 26-Jan 121930/624286212631/28