"Sat, 14 Sep 2024 15:49:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240914
Only TIME
15:49:20
General datetime
2024-09-14 15:49:20Z
For Database
2024-09-14 15:49:20
For HTTP1.1
Sat, 14 Sep 2024 15:49:20 GMT