"Sat, 14 Dec 2024 15:15:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241214
Only TIME
15:15:00
General datetime
2024-12-14 15:15:00Z
For Database
2024-12-14 15:15:00
For HTTP1.1
Sat, 14 Dec 2024 15:15:00 GMT