"Sat, 14 Sep 2024 15:15:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240914
Only TIME
15:15:21
General datetime
2024-09-14 15:15:21Z
For Database
2024-09-14 15:15:21
For HTTP1.1
Sat, 14 Sep 2024 15:15:21 GMT