"Sun, 15 Sep 2024 19:23:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
19:23:04
General datetime
2024-09-15 19:23:04Z
For Database
2024-09-15 19:23:04
For HTTP1.1
Sun, 15 Sep 2024 19:23:04 GMT