"Sun, 15 Sep 2024 20:24:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
20:24:27
General datetime
2024-09-15 20:24:27Z
For Database
2024-09-15 20:24:27
For HTTP1.1
Sun, 15 Sep 2024 20:24:27 GMT