"Sat, 14 Dec 2024 13:15:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241214
Only TIME
13:15:15
General datetime
2024-12-14 13:15:15Z
For Database
2024-12-14 13:15:15
For HTTP1.1
Sat, 14 Dec 2024 13:15:15 GMT