"Sat, 14 Sep 2024 17:15:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240914
Only TIME
17:15:15
General datetime
2024-09-14 17:15:15Z
For Database
2024-09-14 17:15:15
For HTTP1.1
Sat, 14 Sep 2024 17:15:15 GMT