[alecperkins]

What's to follow? It's just a one-time change that makes a lot of sense given their location. They aren't permanently getting rid of Friday. Besides, Hebrew and Muslim calendars are lunar-based and I would imagine not affected by this.

[ars]

Not the calendar, the day of the week. There is no provision in the religious rules for Jews or Muslims for a "one time change".

I'm not super familiar with the Muslim rules, but I know the Jewish rules have their own date line that does not correspond to the international one.

I don't know what the Christian rules are about the international date line and that's what I was asking.