TimeInterval rounding to the closest hour. How to stop?

So I’m putting in a specific start date and time, say 2022-03-10T14:22:00.

I set TimeInterval to one hour and I want results every hour, for example:
2022-03-10T14:22:00
2022-03-10T15:22:00
2022-03-10T16:22:00
2022-03-10T17:22:00

But what I’m getting is results rounded to the closest hour, for example:
2022-03-10T14:00:00
2022-03-10T15:00:00
2022-03-10T16:00:00
2022-03-10T17:00:00

Any fix for this? Thanks.

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