"Sun, 12 May 2024 20:20:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
20:20:37
General datetime
2024-05-12 20:20:37Z
For Database
2024-05-12 20:20:37
For HTTP1.1
Sun, 12 May 2024 20:20:37 GMT