Chris Murphy wrote:
2400 is totally confusing, I'm only finding it used in military
contexts and even there it seems to be vernacular. I'd rather be
surprised if military police use it.
Then just write 23:59 instead.
My suggestion would be, without respect to preference, 0015 UTC,
0030
UTC, or 0100 UTC. And that's only because it acts like a kind of grace
period for anyone used to 0000 UTC, not paying attention to this
thread, and maybe misses the next announcement.
A one-hour (or less) "grace period" in the middle of the night is entirely
useless.
Kevin Kofler