"Fri, 20 Sep 2024 05:15:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240920
Only TIME
05:15:21
General datetime
2024-09-20 05:15:21Z
For Database
2024-09-20 05:15:21
For HTTP1.1
Fri, 20 Sep 2024 05:15:21 GMT