"Sun, 19 May 2024 14:11:54"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
14:11:54
General datetime
2024-05-19 14:11:54Z
For Database
2024-05-19 14:11:54
For HTTP1.1
Sun, 19 May 2024 14:11:54 GMT