"Sun, 08 Dec 2024 21:38:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241208
Only TIME
21:38:15
General datetime
2024-12-08 21:38:15Z
For Database
2024-12-08 21:38:15
For HTTP1.1
Sun, 08 Dec 2024 21:38:15 GMT