"Mon, 09 Dec 2024 15:35:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241209
Only TIME
15:35:38
General datetime
2024-12-09 15:35:38Z
For Database
2024-12-09 15:35:38
For HTTP1.1
Mon, 09 Dec 2024 15:35:38 GMT