"Sun, 15 Sep 2024 21:29:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
21:29:04
General datetime
2024-09-15 21:29:04Z
For Database
2024-09-15 21:29:04
For HTTP1.1
Sun, 15 Sep 2024 21:29:04 GMT