"Sun, 24 Mar 2024 20:15:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240324
Only TIME
20:15:13
General datetime
2024-03-24 20:15:13Z
For Database
2024-03-24 20:15:13
For HTTP1.1
Sun, 24 Mar 2024 20:15:13 GMT