"Sun, 12 May 2024 12:36:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
12:36:00
General datetime
2024-05-12 12:36:00Z
For Database
2024-05-12 12:36:00
For HTTP1.1
Sun, 12 May 2024 12:36:00 GMT