"Sun, 12 May 2024 19:57:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
19:57:23
General datetime
2024-05-12 19:57:23Z
For Database
2024-05-12 19:57:23
For HTTP1.1
Sun, 12 May 2024 19:57:23 GMT