Validation Error: "End time must be after start time" for valid cross-day schedules

[PublisherName]

Description

When attempting to create an Event Schedule with the following values, an error is incorrectly triggered:

Provided Values

• Start Date: 2025-01-01
• Start Time: 23:55:30
• End Date: 2025-01-26
• End Time: 00:00:30

The current validation logic in validate_event_dates_and_time() considers only the time portion without accounting for the fact that end_date > start_date. This results in rejecting cross-day schedules where the end time is logically valid but occurs after midnight.

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Expected Behavior

The validation logic should account for both the date and time. The following entry should be considered valid:

• Start Date + Start Time: 2025-01-01 23:55:30
• End Date + End Time: 2025-01-26 00:00:30

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Steps to Reproduce

1. Attempt to create an Event Schedule with the above values.
2. Observe the validation error: The end time must be after the start time.

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