"Sun, 21 Jul 2024 16:12:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
16:12:37
General datetime
2024-07-21 16:12:37Z
For Database
2024-07-21 16:12:37
For HTTP1.1
Sun, 21 Jul 2024 16:12:37 GMT