"Sun, 21 Apr 2024 11:20:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
11:20:56
General datetime
2024-04-21 11:20:56Z
For Database
2024-04-21 11:20:56
For HTTP1.1
Sun, 21 Apr 2024 11:20:56 GMT