Catlandia, I can personally attest that the in-game clock is something that everyone I know wanted and something that many players have expressed should have been in the game since day 1. I myself have wanted this server clock for a long time to make it easier to standardize a timezone.
There really isn't anything different about a server clock, tbh. Now we just know that EDT is the standard time to plan OPs and when the day/night cycle changes. Eastern time is -5 (-4 on mobile devices but that's a quirk best explained at another time), so simply add or subtract the difference between -5 and your local time. You would have to do this anyway if you ever talked with anyone from the East coast while planning an OP.
Not to mention, obviously the clock is going to be optimized for the United States as this
is the U.S. server.
You also said we had no notification of the server clock... But you know...
Update 1.64 disagrees with you.