National Oatmeal Muffin Day National Oatmeal Muffin Day celebrates the sweet taste of a delicious oatmeal muffin. National Oatmeal Muffin Day + Add to Google Calendar + iCal / Outlook export Date Dec 19 2023 Time All Day Local Time Timezone: America/New_York Date: Dec 19 2023 Time: All Day Category Holiday Share this event
