As requested by Neil, here's a new game announcement.
Using his post.
...
Max 24 hours between gens through 2499, max 48 hours starting 2499.
Edit - If players find this tough, it can be reduced to 2460/75.

Even weekends?

In a small universe, wars will likely start before 2460. It is when wars start that more time is usually needed for battle testing.

So as a rule of thumb:
If all of the damage of a mine hit can be allocated to the ships... everything is fine.
If some damage is dodged... it is considered cheating.