"Sun, 31 Mar 2024 20:14:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240331
Only TIME
20:14:36
General datetime
2024-03-31 20:14:36Z
For Database
2024-03-31 20:14:36
For HTTP1.1
Sun, 31 Mar 2024 20:14:36 GMT