"Sat, 29 Jun 2024 21:42:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
21:42:19
General datetime
2024-06-29 21:42:19Z
For Database
2024-06-29 21:42:19
For HTTP1.1
Sat, 29 Jun 2024 21:42:19 GMT