1980 Calendar with National Holidays, Optional Days Off, and Commemorative Dates in the United States.
May 1980
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|
| 1122 | 2123 | 3124 | 4125 | |||
| 5126 | 6127 | 7128 | 8129 | 9130 | 10131 | 11132 |
| 12133 | 13134 | 14135 | 15136 | 16137 | 17138 | 18139 |
| 19140 | 20141 | 21142 | 22143 | 23144 | 24145 | 25146 |
| 26147 | 27148 | 28149 | 29150 | 30151 | 31152 |
May Holidays and Commemorative Dates
- 11 - Mother's Day
- 26 - Memorial Day
Holidays and Commemorative Dates in May 1980
May 1980 observances Holiday
Optional
| Date | Day | Description |
|---|---|---|
| 1 | Thu | Global Love Day |
| 1 | Thu | Law Day |
| 1 | Thu | Lei Day |
| 1 | Thu | Loyalty Day |
| 1 | Thu | May Day |
| 1 | Thu | National Day of Prayer |
| 1 | Thu | No Pants Day |
| 1 | Thu | School Principals’ Day |
| 2 | Fri | Astronomy Day |
| 2 | Fri | International Harry Potter Day |
| 2 | Fri | World Password Day |
| 2 | Fri | World Tuna Day |
| 3 | Sat | Kentucky Derby |
| 3 | Sat | National Paranormal Day |
| 3 | Sat | National Space Day |
| 3 | Sat | St Thomas Day |
| 3 | Sat | World Press Freedom Day |
| 4 | Sun | Free Comic Book Day |
| 4 | Sun | Haymarket Riot |
| 4 | Sun | Join Hands Day |
| 4 | Sun | Kent State Shootings |
| 4 | Sun | National Explosive Ordnance Disposal (EOD) Day |
| 4 | Sun | Rhode Island Independence Day |
| 4 | Sun | Star Wars Day |
| 5 | Mon | African World Heritage Day |
| 5 | Mon | Cinco de Mayo |
| 5 | Mon | International Day of the Midwife |
| 5 | Mon | National Lemonade Day |
| 5 | Mon | World Laughter Day |
| 5 | Mon | World Portuguese Language Day |
| 6 | Tue | International No Diet Day |
| 6 | Tue | National Nurses Day |
| 6 | Tue | National Tourist Appreciation Day |
| 7 | Wed | National Foster Care Day |
| 7 | Wed | Teacher’s Day |
| 8 | Thu | Buddha Day |
| 8 | Thu | International Thalassaemia Day |
| 8 | Thu | National Have a Coke Day |
| 8 | Thu | National Receptionists Day |
| 8 | Thu | National Student Nurse Day |
| 8 | Thu | Truman Day |
| 8 | Thu | Victory in Europe Day |
| 8 | Thu | World Red Cross Day |
| 10 | Sat | Military Spouse Appreciation Day |
| 10 | Sat | National Clean Your Room Day |
| 10 | Sat | National Golf Day |
| 10 | Sat | National Provider Day |
| 10 | Sat | World Lupus Day |
| 11 | Sun | Fair Trade Day |
| 11 | Sun | Mother's Day |
| 11 | Sun | National Eat What You Want Day |
| 11 | Sun | Pullman Strike |
| 11 | Sun | World Migratory Bird Day |
| 12 | Mon | International Nurses Day |
| 12 | Mon | National Limerick Day |
| 13 | Tue | National Apple Pie Day |
| 13 | Tue | National Third Shift Workers Day |
| 13 | Tue | world cocktail day |
| 14 | Wed | Jamestown Colony Founded |
| 15 | Thu | Ascension Day |
| 15 | Thu | International Day of Families |
| 15 | Thu | National Pizza Party Day |
| 15 | Thu | Peace Officers Memorial Day |
| 16 | Fri | International Day of Light |
| 17 | Sat | Armed Forces Day |
| 17 | Sat | Bike-to-Work Day |
| 17 | Sat | Endangered Species Day |
| 17 | Sat | Malcolm X Day |
| 17 | Sat | World Hypertension Day |
| 18 | Sun | International Museum Day |
| 18 | Sun | National Learn to Swim Day |
| 18 | Sun | National No Dirty Dishes Day |
| 18 | Sun | Preakness Stakes |
| 18 | Sun | World Whisky (Whiskey) Day |
| 19 | Mon | World Baking Day |
| 20 | Tue | Homestead Act |
| 20 | Tue | National Be a Millionaire Day |
| 20 | Tue | National Defense Transportation Day |
| 20 | Tue | National Rescue Dog Day |
| 20 | Tue | Whit Monday |
| 20 | Tue | World Bee Day |
| 21 | Wed | International Tea Day |
| 21 | Wed | National Memo Day |
| 21 | Wed | National Talk Like Yoda Day |
| 21 | Wed | National Waitstaff Day |
| 21 | Wed | Shavuot |
| 21 | Wed | World Day for Cultural Diversity for Dialogue and Development |
| 22 | Thu | Harvey Milk Day |
| 22 | Thu | International Day for Biological Diversity |
| 22 | Thu | National Maritime Day |
| 22 | Thu | World Goth Day |
| 23 | Fri | World Turtle Day |
| 24 | Sat | National Brother's Day |
| 24 | Sat | National Scavenger Hunt Day |
| 24 | Sat | World Schizophrenia Day |
| 25 | Sun | National Missing Children’s Day |
| 25 | Sun | National Wine Day |
| 25 | Sun | Pentecost |
| 26 | Mon | Memorial Day |
| 26 | Mon | National Paper Airplane Day |
| 27 | Tue | National Sunscreen Day |
| 28 | Wed | National Brisket Day |
| 28 | Wed | National Burger Day |
| 28 | Wed | World Blood Cancer Day |
| 29 | Thu | International Day of United Nations Peacekeepers |
| 29 | Thu | Learn About Composting Day |
| 30 | Fri | National Creativity Day |
| 30 | Fri | Red Nose Day (Comic Relief) |
| 30 | Fri | World Multiple Sclerosis Day |
| 31 | Sat | National Smile Day |
| 31 | Sat | World No Tobacco Day |