"Sat, 14 Sep 2024 04:21:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240914
Only TIME
04:21:21
General datetime
2024-09-14 04:21:21Z
For Database
2024-09-14 04:21:21
For HTTP1.1
Sat, 14 Sep 2024 04:21:21 GMT