"Sun, 12 May 2024 14:37:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
14:37:52
General datetime
2024-05-12 14:37:52Z
For Database
2024-05-12 14:37:52
For HTTP1.1
Sun, 12 May 2024 14:37:52 GMT