[freedrock87]

According to the bible you or possessions or servants aren't allowed to "work" on the Sabbath (On it you shall not do any work, you, or your son, or your daughter, your male servant, or your female servant, or your livestock, or the sojourner who is within your gates.)

Rabbinic Judaism expanded this to the Jews doing "work" for you. Since this server is hosted in Israel and there are Jews who work for electric company on Sabbath. In addition the he doesn't want the server to work so he has it "work" only on a day when there isn't Sabbath anywhere in world.