Yom Kippur is the holiest day in Judaism and Samaritanism. It occurs annually on the 10th of Tishrei. Primarily centered on atonement and repentance, the day's observances consist of full fasting and ascetic behavior accompanied by intensive prayer as well as sin confessions.

All Hallows' Eve, or All Saints' Eve is a celebration observed in many countries on 31 October, the eve of the Western Christian feast of All Saints' Day.

Veterans Day (originally known as Armistice Day) is a federal holiday in the United States observed annually on November 11, for honoring military veterans of the United States Armed Forces (who were discharged under conditions other than dishonorable). It coincides with other holidays including Armistice Day and Remembrance Day which are commemorated in other countries

Thanksgiving is a national holiday celebrated on various dates in the United States, Canada, Grenada, Saint Lucia, and Liberia. It began as a day of giving thanks and sacrifice for the blessing of the harvest and of the preceding year. Similarly named festival holidays occur in Germany and Japan. https://en.wikipedia.org/wiki/Thanksgiving