Find DATETIME values with a non-00:00:00 time

I have a column in SQL Server with DATETIME values. Most rows appear to have no time component, (eg, 2025-06-17 00:00:00.000), but I want to double check this by searching for any rows where the time is not exactly midnight.

So for example, given this data:

I want a query that only returns rows with a non-zero time:

How can I filter out all rows where the time part is exactly 00:00:00.000?

Comparing StartDate to StartDate casted as date:

SELECT *
FROM Timetable
WHERE StartDate != CAST(StartDate AS DATE);

db<>fiddle Demo