January 2025 Calendar By Weeks With Holidays. New year's day is a public holiday in all countries that observe the gregorian calendar, with the exception of israel. Certainly, there’s no shortage of january national holidays and international holidays to mark on your calendar this month.

Also holidays, red days, flag days, namedays, days off, and dates for easter, pentecost, and midsummer. Weeks and week numbers for 2025.