Set a field to 4:30PM today using pipelines (should be simple?)

I am trying to use pipelines to set a "clock out time" of 4:30PM Eastern for all timecards that are still open at 9PM. I am setting up a pipeline to run at 9PM that searches all records where the Clock Out Time field isn't set and then putting a time in.

I am trying to use:
{{ (time.now|timezone('America/New_York')).date() + time.delta(hours=16, minutes=30) }}

When I do that, I get 16:30 UTC, not UTC Eastern Time. I can just offset by 5 hours and use "hours=21' but that will run into problems when we start using daylight savings time again.

How can I use today's date and 4:30PM regardless of what that is in UTC?

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Edward Hefter
www.Sutubra.com
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