This glitch came on 1.14 through 1.18.31, so if start to create your new world first time, enable cheat and click Daylight cycle to disable (Do not touch Always day, unless the Daylock cycle is fixed) When done, create your new world and take the Clock (Just in case) clock does not sync/move on Sun/Moon, also try with /Time add 50  on Command chat or using (Original/Repeating Command block) the Sun/Moon still can move when Typing /Time add 50, and clock can sync/move on Sun/Moon.

Step to reproduce:

1. Create new world
2. Click Daylight Cycle (If Achievement was disabled and Do not touch Always day unless it patched
3. Create new world
4. Take clock and type Command chat /Time add 50

Observed results:

Clock does not sync to Sun and Moon and Sun and Moon does not move.

Expected results:

Daylight cycle must be fixed, and-in-order to make work Clock and Sun/Moon.