https://www.holyclock.com/ """ HolyClock is a free service for closing websites on Shabbat and Holidays. The closing occurs before Shabbat enters, for each visitor individually, based on their physical location in the world at the given time.

With HolyClock you can prevent desecration of Shabbat by visitors of your website. A visitor who is located where Shabbat has begun, is redirected to a temporary closing page until Shabbat ends. """