"Mon, 29 Apr 2024 20:15:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240429
Only TIME
20:15:13
General datetime
2024-04-29 20:15:13Z
For Database
2024-04-29 20:15:13
For HTTP1.1
Mon, 29 Apr 2024 20:15:13 GMT