"Sun, 12 May 2024 21:04:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
21:04:13
General datetime
2024-05-12 21:04:13Z
For Database
2024-05-12 21:04:13
For HTTP1.1
Sun, 12 May 2024 21:04:13 GMT