"Sun, 15 Sep 2024 10:40:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
10:40:10
General datetime
2024-09-15 10:40:10Z
For Database
2024-09-15 10:40:10
For HTTP1.1
Sun, 15 Sep 2024 10:40:10 GMT