White House Advent Calendar 2025 Dates. The supernova remnant cassiopeia a has found new life as a christmas spectacle in a stunning new image from the james webb space telescope featured in a. On the first sunday of advent, the advent season begins.

Check out usa calendar in 2025 for a complete list of public holidays, federal holidays, state holidays and observances. A christian holy day known also as whit sunday, white sunday and whitsun (united kingdom).