"Mon, 20 May 2024 11:20:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
11:20:43
General datetime
2024-05-20 11:20:43Z
For Database
2024-05-20 11:20:43
For HTTP1.1
Mon, 20 May 2024 11:20:43 GMT