"Sat, 08 Jun 2024 18:21:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240608
Only TIME
18:21:15
General datetime
2024-06-08 18:21:15Z
For Database
2024-06-08 18:21:15
For HTTP1.1
Sat, 08 Jun 2024 18:21:15 GMT