"Sun, 21 Apr 2024 08:36:46"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
08:36:46
General datetime
2024-04-21 08:36:46Z
For Database
2024-04-21 08:36:46
For HTTP1.1
Sun, 21 Apr 2024 08:36:46 GMT