National Oatmeal Cookie Day

Takes place two times annually, on the 30th of the month of April and on the 19th of the month of March.

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References:
foodimentary.com/…/march-19th-is-national-oatmeal-cookie-day-3
daysoftheyear.com/days/oatmeal-cookie-day/
gone-ta-pott.com/national_oatmeal_cookie_day.html