"Sun, 16 Jun 2024 18:04:34"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240616
Only TIME
18:04:34
General datetime
2024-06-16 18:04:34Z
For Database
2024-06-16 18:04:34
For HTTP1.1
Sun, 16 Jun 2024 18:04:34 GMT