"Tue, 13 Aug 2024 20:18:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240813
Only TIME
20:18:21
General datetime
2024-08-13 20:18:21Z
For Database
2024-08-13 20:18:21
For HTTP1.1
Tue, 13 Aug 2024 20:18:21 GMT