"Sat, 29 Jun 2024 14:59:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
14:59:21
General datetime
2024-06-29 14:59:21Z
For Database
2024-06-29 14:59:21
For HTTP1.1
Sat, 29 Jun 2024 14:59:21 GMT