"Sun, 12 May 2024 13:01:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
13:01:21
General datetime
2024-05-12 13:01:21Z
For Database
2024-05-12 13:01:21
For HTTP1.1
Sun, 12 May 2024 13:01:21 GMT