National Cookie Day National Cookie Day celebrates the delicious taste of all the different types of cookies in the world. Whether they’re covered in chocolate chips or sugar, this day is a great excuse to buy a box or bake some fresh cookies. National Cookie Day Handout + Add to Google Calendar + iCal / Outlook export Date Dec 04 2021 Expired! Time All Day Local Time Timezone: America/New_York Date: Dec 04 2021 Time: All Day Category Holiday Share this event