When trying to set the sim time in MSFS 2024, it does not work. In MSFS 2020, you could transmit these events to set the exact sim time:
ZULU_YEAR_SET
ZULU_DAY_SET
ZULU_HOURS_SET
ZULU_MINUTES_SET
These no longer work in 2024.
Reading also no longer works, it seems to only read the local computer time, even with using a custom time in the sim.
Reading ABSOLUTE TIME seems to work correctly in 2024, but you cannot set the sim time using that.