Day of Atonement. The holiest day of the year in Judaism, traditionally observed with a 25-hour period of fasting and intensive prayer

Torah: Leviticus 16:1-34; Numbers 29:7-11
Haftarah: Isaiah 57:14-58:14

https://hebcal.com/h/yom-kippur-2025?uc=ical-jewish-holidays-all