"Mon, 20 May 2024 18:34:26"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
18:34:26
General datetime
2024-05-20 18:34:26Z
For Database
2024-05-20 18:34:26
For HTTP1.1
Mon, 20 May 2024 18:34:26 GMT