"Sat, 21 Dec 2024 23:47:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
23:47:47
General datetime
2024-12-21 23:47:47Z
For Database
2024-12-21 23:47:47
For HTTP1.1
Sat, 21 Dec 2024 23:47:47 GMT