"Sat, 21 Dec 2024 03:48:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
03:48:59
General datetime
2024-12-21 03:48:59Z
For Database
2024-12-21 03:48:59
For HTTP1.1
Sat, 21 Dec 2024 03:48:59 GMT