Event Creation Date Before Current Date

[gauravsinhaweb]

Issue Description:
While testing the calendar site, I discovered that it allows the creation of events with dates before the current date. For instance, even though today is October 30th, I was able to create an event for October 1st. This behavior seems to be incorrect as events should not be allowed in the past.

Steps to Reproduce:

Navigate to the calendar site.
Create a new event.
Set the event date to a date before the current date.

Expected Behavior:
Events with dates in the past should not be allowed, and users should receive an descriptive error and be prevented from creating such events.