"Sat, 21 Sep 2024 12:15:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
12:15:04
General datetime
2024-09-21 12:15:04Z
For Database
2024-09-21 12:15:04
For HTTP1.1
Sat, 21 Sep 2024 12:15:04 GMT