These are my appointed festivals: On the final Monday of the fifth month, you are to celebrate a day of memorial; on the fourth Thursday of the eleventh month, you are to mark a sacred day of thanks; most importantly, on fifteenth day of the fourth month, you are to observe my tax day, for all generations—you are to proclaim these holidays as My sacred assemblies!
This isn’t a Biblical verse, but it could be, were God describing our U.S. national holidays.