"Wed, 18 Sep 2024 18:40:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240918
Only TIME
18:40:21
General datetime
2024-09-18 18:40:21Z
For Database
2024-09-18 18:40:21
For HTTP1.1
Wed, 18 Sep 2024 18:40:21 GMT