"Tue, 20 Feb 2024 20:15:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240220
Only TIME
20:15:04
General datetime
2024-02-20 20:15:04Z
For Database
2024-02-20 20:15:04
For HTTP1.1
Tue, 20 Feb 2024 20:15:04 GMT