"Sat, 29 Jun 2024 23:21:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
23:21:16
General datetime
2024-06-29 23:21:16Z
For Database
2024-06-29 23:21:16
For HTTP1.1
Sat, 29 Jun 2024 23:21:16 GMT