"Sun, 21 Jul 2024 16:50:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
16:50:51
General datetime
2024-07-21 16:50:51Z
For Database
2024-07-21 16:50:51
For HTTP1.1
Sun, 21 Jul 2024 16:50:51 GMT