system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are all bigger holidays at the end of the month? (Halloween, Thanksgiving, Christmas)
gpt
Coincidence? New years is literally the beginning of the month, as is July 4th. Christmas was moved to be closer to the pagan holidays of Yule and Saturnalia, while Halloween basically took over for Samhain (which began at sunset on Oct 31st and ended at sunset on Nov 1st). Canadian Thanksgiving is Oct 12th, right in the middle of the month. 

As well, American Thanksgiving can actually be as early as Nov 22nd.