"Sun, 15 Sep 2024 18:02:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
18:02:09
General datetime
2024-09-15 18:02:09Z
For Database
2024-09-15 18:02:09
For HTTP1.1
Sun, 15 Sep 2024 18:02:09 GMT