Still better than the spell that needs to be cast at local noon. They synchronized those by having each monastery create and then destroy an invisible copy of the sun whenever they cast it. You don't want to know how expensive to maintain that is.

I'm really liking the idea of the day-to-da experience for a working mage in the magical standards agency responsible for keeping all these things in order. An even more arcane IEEE, if that's possible.

Spells extracting energy from another magical system MUST send a request for draw before beginning extraction. High-capacitance spells SHOULD respond to all requests with positive authorization if sufficient capacity exists, but MUST reply in some way.

We're a little worried about what happens when the astral calender hits the new millenium but no ones figured out how to insert another date rune without causing the whole magic circle to start smoking alarmingly.