"Sat, 21 Dec 2024 06:23:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
06:23:38
General datetime
2024-12-21 06:23:38Z
For Database
2024-12-21 06:23:38
For HTTP1.1
Sat, 21 Dec 2024 06:23:38 GMT