Who is doing time sync over HTTPS? Is anyone?

For most civilian purposes, time sync is done with NTP, which, using Marzullo's algorithm, can reduce error to around 0.5% of RTT, nothing like "half of RTT". Did you read "0.5%" and thought it meant "50%"?

Is your complaint about something specific? This problem seems imaginary.

> Engineers on NTP forums have confirmed that half of RTT (Round Trip Time) is the firm limit

Which engineers? That statement is not true.

> Some engineers are experimenting with ways to push accuracy below 10ms

Which engineers? NTP accuracy is typically around 0.5ms in good conditions.

The use of the ’ smart apostrophe and the weird 1⃣2⃣ makes me think this post was written by a very confused AI.