You searched for: “holy day
holiday, holy day
holiday (HAHL i day") (noun)
1. Vacation, a time during which an individual does not have a normal work schedule: For Rena's and Myrna's summer holiday, they are going to go to the mountains when they both are free from duties and obligations.
2. A day that is identified as a celebration for a significant event: The holiday this weekend is to celebrate the establishment of the new university.
holy day (HOH lee day") (noun)
A special day designated for the celebration of religious events or observances: The pastor suggested they designate the first day of summer as a holy day and have special church services to commemorate it.

Tomorrow they have a holiday from school because it is a holy day for many religions and churches.