Welcome to When is.us!

Our mission is to provide the most clear and comprehensive list of holidays on the internet.

We currently host the days and dates for Christian, Jewish, Muslim, Hindu, and American holidays. For every holiday listed, we display the day and date for every year from 2013 to 2020.

We go beyond a calendar that simply informs you of the date. Take Easter, for instance. You will learn what Easter is about, how it’s calculated, as well as why Easter is celebrated on different days throughout the world.

If the holiday begins at night on, say March 4th, some sources will note that it begins on March 4th yet others March 5th. Here, in these cases we will inform you clearly that “this holiday starts at sunset on March 4th and ends at sunset on March 6th.”

We hope you enjoy learning about holidays and cultures as much as we have enjoyed creating this resource for you.