I wonder how many years the US could save its citizens by modernizing and digitizing the IRS, DMV, etc. Tens of thousands? Hundreds of thousands?
So it would seem that all the worker bees in government offices rely on having access to those backend databases during USA office hours, and the only time they can realistically be shut down is while the civil servants are off the clock.
Long ago, the Best Buy website also closed then opened during business hours.