"Mon, 18 Mar 2024 20:16:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240318
Only TIME
20:16:16
General datetime
2024-03-18 20:16:16Z
For Database
2024-03-18 20:16:16
For HTTP1.1
Mon, 18 Mar 2024 20:16:16 GMT