"Sun, 15 Sep 2024 23:21:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
23:21:51
General datetime
2024-09-15 23:21:51Z
For Database
2024-09-15 23:21:51
For HTTP1.1
Sun, 15 Sep 2024 23:21:51 GMT