Suggested hints for Problem 19: Counting Sundays

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What is your hint or solution suggestion?
Before implementing date processing from scratch, look into the powerful javascript Date object.
Looping through every single day and checking if it’s both a Sunday and the first of the month can take too long, causing the last test to fail. Instead, first align with a Sunday, then increment by 7 days and check if it’s the first day of the month.

Challenge: Problem 19: Counting Sundays

Link to the challenge:

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