"Sat, 29 Jun 2024 19:45:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
19:45:21
General datetime
2024-06-29 19:45:21Z
For Database
2024-06-29 19:45:21
For HTTP1.1
Sat, 29 Jun 2024 19:45:21 GMT