"Sun, 12 May 2024 13:19:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
13:19:09
General datetime
2024-05-12 13:19:09Z
For Database
2024-05-12 13:19:09
For HTTP1.1
Sun, 12 May 2024 13:19:09 GMT