"Sat, 29 Jun 2024 18:48:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
18:48:40
General datetime
2024-06-29 18:48:40Z
For Database
2024-06-29 18:48:40
For HTTP1.1
Sat, 29 Jun 2024 18:48:40 GMT