"Fri, 20 Sep 2024 16:18:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240920
Only TIME
16:18:21
General datetime
2024-09-20 16:18:21Z
For Database
2024-09-20 16:18:21
For HTTP1.1
Fri, 20 Sep 2024 16:18:21 GMT