"Sat, 21 Dec 2024 17:43:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
17:43:35
General datetime
2024-12-21 17:43:35Z
For Database
2024-12-21 17:43:35
For HTTP1.1
Sat, 21 Dec 2024 17:43:35 GMT