"Sun, 12 May 2024 16:09:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
16:09:18
General datetime
2024-05-12 16:09:18Z
For Database
2024-05-12 16:09:18
For HTTP1.1
Sun, 12 May 2024 16:09:18 GMT