"Mon, 13 May 2024 20:00:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
20:00:04
General datetime
2024-05-13 20:00:04Z
For Database
2024-05-13 20:00:04
For HTTP1.1
Mon, 13 May 2024 20:00:04 GMT