Holidays and Observances
Alphabetical Listing of D Holidays

Below, you can find a Holidays and Observances Alphabetical Listing of US Holidays, World Holidays and Observances that start with the letter D.  We will add any new Holidays as we find them!

Search for Holidays Alphabetically:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, N-Pg2 O, P, Q, R, S, T, U, V, W, X-Y-Z

Drink Wine Day - February 18 - Yeah!!

D

• D.B. Cooper Day - November 24

• D-Day Invasion Anniversary - June 6

• Daffodil Day - August 28, 2026 (Fourth Friday in August)

• Daffodil Days - March 22, 2026

• Dairy Alternatives Month - June
  

• Dairy Month - June
  

• Daisy Day - January 28

• Daisy Gatson Bates Day - February 16, 2026 (State Holiday in Arkansas)

• Dalek Day - August 8 and December 21

• Dance Marathon Day - March 31

• Dance of the Seven Veils Day - January 22

• Daniel Boone Day - June 7

• Dare Day - June 1

• Dark Chocolate Day - February 1

• Darwin Day - February 12

• Data Innovation Day - May 11-12, 2026

• Data Privacy Week - January 24-28

• Dating and Life Coach Recognition Week - May 3-9, 2026 (First Full Week of May) 

• Daughter's and Son's Day - March 1, 2026 (First Sunday in March)

• Daughter's Day - September 27, 2026 (Fourth Sunday in September)

• Dave Brubeck Day (Jazz Pianist and Composer) - May 4

• Day After Christmas Day - December 26

• Day after Thanksgiving (State Holiday in 22 States) - November 27, 2026

• Day of Dialogue - January 5

• Day of Los Reyes - (Catholic Holiday in Uruguay) - January 6

• Day of Reconciliation (South Africa) - December 16

• Day of Remembrance for all Victims of Chemical Warfare - April 29
  

• Day of Remembrance of the Victims of the Rwanda Genocide - April 7

• Day of Silence - April 10, 2026

• Day of the Child - April 30

• Day of the Christian Martyr - June 29, 2026

• Day of the Deployed - October 26

• Day of the Dude - March 6

• Day of the Finnish Language (Finland) - April 9

• Day of the Five Billion - July 11

• Day of the Georgian Language (Georgia) - April 14

• Day of the Homeland - September 13, 2026 (Second Sunday in September)

• Day of the Horse - December 13

• Day of the Imprisoned Writer - November 15

• Day of the Mushroom - April 16

• Day of the Ninja - December 5

• Day of the Seafarer - June 25

• Day of the Seven Billion - October 31

• Day of the Six Billion - October 12

• Day of Unity - October 5, 2026 (First Monday in October)

• Day of Vesak - May 1, 2026
  

• Day With(out) Art Day - December 1

• Daylight Savings Ends - November 1, 2026
  

• Daylight Savings Starts - March 8, 2026 (Second Sunday in March)

• Daytona 500 - February 15, 2026

• Daytona Pole Day - February 11, 2026
  

• Deaf Dog Awareness Week - September 20-26, 2026 (Last Full Week of September)

• Deaf History Month (March 13 - April 15)

• Dear Diary Day - September 22

• D.E.A.R. Day (Drop Everything And Read) - April 12

• D.E.A.R Drop Everything and Read Month - April

• Dear Santa Letter Week - November 7-13

• Death/Duty Day - November 11

• Death Penalty Focus Week - October 4-10, 2026 (Week with October 10th it it)

• Debunking Day - March 11

• Decembeard - December 

• December Holidays - If you just want a quick bulleted list of all the December monthly holidays, along with the complete schedule of weekly and daily holidays for this month, head over to our main December Holidays page.

• December Monthly Holidays - Looking for more than just a list? We have created a complete guide breaking down the meaning, history, and wellness themes behind every single month-long observance in December.
  

• Decide to be Married Day - June 27

• Deck Safety Month - May

• Declaration of the Bab Day (Bahai Faith) - May 23

• Declutter for a Cause Month - February

• Decorating With Candy Day - February 1

• Deep Vein Thrombosis (DVT) Awareness Month - March

• Defeat Diabetes Month - April
  

• Delaware Coastal Zone Awareness Month - October

• Delaware Flood Awareness Week – Observed March 16–20, 2026 (Coordinated by the Department of Natural Resources and Environmental Control (DNREC) and DEMA to educate homeowners on rising coastal flood plain risks, tide surges, and the importance of holding localized flood insurance). Date Rule: Held annually during the third full week of March starting on Monday.

• Delaware Severe Weather Awareness Week - March 9-13, 2026 (Second Full Week of March starting on Monday)

• Delaware State Fair - July 23 - August 1, 2026 (Starts on the Third Thursday of July for 10 Days)

• Delaware Winter Weather Awareness Week – Observed December 7–11, 2026 (A late-year campaign run by state transport and emergency teams to prepare the public for upcoming coastal winter storms, extreme drops in temperature, black ice, and home weatherproofing needs). Date Rule: Held annually during the first full week of December starting on Monday. 

• Delaware State Holidays

• Democratic National Convention - TBA

• Denim Day - April 29, 2026

• Dental Assistant Week - March 1-7, 2026

• Dental Drill Appreciation Day - January 26

• Dentist Day - March 6

• Department of Veterans Administration Created - July 21

• Department Store Day - October 16

• Descendants Day - June 28, 2026 (Last Sunday in June)

• Desperation Day - February 13

• Developmental Language Disorder Awareness Day - October 18

• Devil's Night - October 30

• Devotion to Duty Day - July 1

• Dewey Decimal System Day - December 10

• Dia de los Muertos - November 1

• Dia De Los Ninos / Dia De Los Libros Day - April 30

• Diabetic Eye Disease Month - November

• Dick Tracy Day - October 4

• Dictionary Day - April 14

• Dictionary Day - October 16

• Diesel Engine Day - February 23
  

• Diet Resolution Week - January 1-7

• Different Colored Eyes Day - July 12

• Digestive Diseases Awareness Month - May

• Digital Learning Day - February 26, 2026 (Last Thursday in February)

• Digital Scrapbooking Day - October 3, 2026 (First Saturday in October)

• Dimpled Chad Day - January 4

• Dinosaur Day - May 15, 2025 and June 1
  

• Dinosaurs Day - August 2

• Direct Support Professional Recognition Week - September 9-15

• Dirty Book Day - June 11

• Disability Day of Mourning - March 1

• Disarmament Week - October 24-30

• Disaster Day - February 5
  

• Disaster Preparedness Month - June
  

• Discover Catholic Schools Week - November 15-21, 2026

• Discover Girl Day - February 26, 2026 (Thursday of National Engineers Week)

• Discover What Your Name Means Day - March 4, 2026 (Wednesday of 1st Full Week of March)

• Disneyland's Anniversary - July 17 (First Day Open was July 17, 1955)

• Disobedience Day - July 3

• Distaff Day - January 7

• Ditch New Years Resolutions Day - January 17

• Diversity Awareness Month - October

• Divorce Monday - January 5, 2026 (First Monday of the year is when most divorces are filed)

• Diwali - November 8, 2026 (Observed in October or November)

• DNA Day - April 25

• Do a Grouch a Favor Day - February 16
  

• Do Dah Day (Pasadena) - November 22, 2026

• Do Dah Day (Salute to Silliness) - May 16, 2026 (Third Saturday in May)

• Do Something Nice Day - October 5

• Doctor-Patient Trust Day - March 17

• Dog Appreciation Month - April

• Dog Days - July

• Dog Days of Summer - July 3 - August 11 - (First Two Weeks in July)

• Dog Farting Awareness Day - April 8

• Dog House Repairs Month - July

• Dog Training Education Month - February

• Doggy Date Night - February 3

• Dogs in Politics Day - September 23
  

• DOGust Universal Birthday for Shelter Dogs - August 1

• Dollars Against Diabetes Days - June 19-21, 2026 (Father's Day Weekend)

• Dollhouse & Miniatures Month - October

• Dolphin Awareness Month - March

• Domestic Violence Awareness Month - October

• Domino Day - On Hold for Now! (Either the Second Friday or Second Saturday in November) 

• Donald Duck Day - March 13 and June 9

• Donate a Day's Wages to Charity - May 13, 2026 (Second Wednesday in May)

• Don't Cry Over Spilled Milk Day - February 11

• Don't Fry Day - May 22, 2026 (Friday before Memorial Day which falls on May 25, 2026)

• Don't Give Up the Ship Day - June 1

• Don't Go to Work Unless it's Fun Day - April 3

• Don't Make Your Bed Day - December 21, 2026 (First Day of Winter)

• Don't Step on a Bee Day - July 10
  

• Dot Your I's Day - December 20

• Dr. Seuss Day - March 2

• Draw a Picture of a Bird Day - April 8

• Drawing Day or Pencil Day - June 6, 2026 (First Saturday in June)

• Dream Day - March 11

• Dream Day - August 28

• Dream Your Sweet Day - February 13

• Dreams of Reason Feast Day - April 14

• Dress in Blue Day - March 6, 2026 (First Friday in March)

• Dress Like a Dork Day - October 19

• Dribble to Work Day - March 14

• Drink Beer Day - September 28
  

• Drink Local Wine Day - October 12

• Drink Local Wine Week - October 11-17, 2026 (Second Full Week of October)

• Drink Wine Day - February 18
  

• Drinking Water Week - May 3-9, 2026 (First Full Week of May)

• Drive in Movie Day - June 6

• Drive Safely Work Week - October 5-9, 2026 (Monday - Friday of First Full Week of October)

• Drive Sober or Get Pulled Over - August 19 - September 6, 2026, and also Winter Enforcement - December 16, 2026 - January 1, 2027

• Drive Your Corvette to Work Day - June 26, 2026 (Friday closest to June 30)

• Drowsy Driver Awareness Day - April 6

• Drowsy Driving Prevention Week - November 1-7, 2026 (First Full Week in November)

• Drum Month - November

• Dry Bean Day - January 6

• Dry January (Avoiding Alchohol) - January 

• Duchenne Muscular Dystrophy Awareness Week - February 13-19

• Dumbstruck Day - March 15

• Dump Your Significant Jerk Day - February 1, 2026 (First Sunday in February)

• Dump Your Significant Jerk Week - February 1-7, 2026 (Week Before Valentine's Day)

• Dunce Day - November 8

• Dussehra - October 20, 2026 (Also Known as Vijayadashmi)

• Dutch-American Friendship Day - April 19

• Dwarfish Awareness Month - October

• Dynamic Harmlessness Day - November 2

• Dyngus Day - April 6, 2026 (the Monday after Easter which is on April 5, 2026)

• Dysautonomia Awareness Month - October

• Dyslexia Awareness Month - October
  

Search for Holidays Alphabetically:

A, B, C, D, E, F, G, H, I, J, K, L, M, N, N-Pg2 O, P, Q, R, S, T, U, V, W, X-Y-Z