"Sat, 21 Dec 2024 03:48:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
03:48:58
General datetime
2024-12-21 03:48:58Z
For Database
2024-12-21 03:48:58
For HTTP1.1
Sat, 21 Dec 2024 03:48:58 GMT