"Sun, 11 Feb 2024 20:15:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240211
Only TIME
20:15:19
General datetime
2024-02-11 20:15:19Z
For Database
2024-02-11 20:15:19
For HTTP1.1
Sun, 11 Feb 2024 20:15:19 GMT