Throughout the year there are so many awareness days, commemorative days, special days, celebrations, holidays, observances, etc, etc. These can be great as blog post inspiration, or just for getting a bit of extra traffic to an existing post by repromoting it as a tie-in.

Read on for a list of notable dates for September - if the day has its own website or wiki page, I've linked to it. A lot of the weirder ones are USA based unofficial 'national days'; I've included them in the list if they've crossed the pond, or had a fair number of media hits when I googled them.

I've also included links to any posts I've written for a particular day.

1st

☆ All Saints' Day.
☆ Author's Day.
☆ Extra Mile Day. [USA]
☆ Go Cook For Your Pets Day.
☆ International Lennox-Gastaut Syndrome Awareness Day.
☆ National Cook For Your Pets Day.
☆ National French Fried Clam Day. [USA]
☆ National Vinegar Day. [USA]
☆ World Vegan Day.
☆ Zero Tasking Day.


2nd

☆ All Souls' Day.
☆ National Deviled Egg Day. [USA]


3rd

☆ Cliche Day.
☆ Jellyfish Day.
☆ Mother's Day. [Timor Leste]
☆ National Sandwich Day. [USA]

4th

☆ National Candy Day. [USA]
☆ National Eating Healthy Day. [USA]
☆ Use Your Common Sense Day.


5th

☆ Bonfire Night. [UK]
☆ Love Your Red Hair Day.



6th

☆ International Day for Preventing the Exploitation of the Environment in War and Armed Conflict.
☆ National Nachos Day. [USA]
☆ Saxophone Day.


7th

☆ Hug a Bear Day.
☆ National Bittersweet Chocolate with Almonds Day. [USA]
☆ National Kladdkakans (Mud Cake) Day. [Sweden]


8th

☆ Cook Something Bold and Pungent Day.
☆ International Day of Radiology.
☆ Intersex Solidarity Day.
☆ National Harvey Wallbanger Day. [USA]
☆ National Cappuccino Day. [USA]
☆ National Shot Day. [USA]


9th

☆ Chaos Never Dies Day.
☆ Iqbal Day. [Pakistan]
☆ National Scrapple Day. [USA]
☆ World Freedom Day.


10th

☆ National Vanilla Cupcake Day. [USA]
☆ Seseame Street Day.


11th

☆ Armistice Day.
☆ Children's Day. [Croatia]
☆ National Sundae Day. [USA]
☆ Origami Day.
☆ Pepero Day. [South Korea]
☆ Veterans Day. [USA]


12th

☆ Fancy Rat and Mouse Day.
☆ Father's Day. [Indonesia]
☆ Pizza With The Works Except Anchovies Day.
☆ World Pneumonia Day.


13th

☆ World Kindness Day.


14th

☆ Children's Day. [India]
☆ Loosen Up, Lighten Up 'LuLu' Day.
☆ National Pickle Day. [USA]
☆ National Spicy Guacamole Day. [USA]
☆ World Diabetes Day.


15th

☆ America Recycles Day. [USA]
☆ Clean Out Your Refrigerator Day.
☆ Day of the Imprisoned Writer.
☆ I Love To Write Day.
☆ National Philanthropy Day.


16th

☆ Button Day.
☆ Have a Party With Your Bear Day.
☆ International Day for Tolerance.
☆ National Fast Food Day. [USA]


17th

☆ Homemade Bread Day.
☆ International Happy Goose Day.
☆ International Students' Day.
☆ Take a Hike Day.
☆ Unfriend Day.
☆ World Prematurity Day.


18th

☆ Occult Day.


19th

☆ Have a Bad Day Day.
☆ International Men's Day.
☆ National Soup Day. [Germany]
☆ World Toilet Day. (My Post)


20th

☆ Africa Industrialization Day.
☆ Name Your PC Day.
☆ National Peanut Butter Fudge Day. [USA]
☆ Revolution Day. [Mexico]
☆ Transgender Day of Remembrance.
☆ Universal Children's Day.


21st

☆ World Hello Day.
☆ World Television Day.


22nd

☆ Go For a Ride Day.


23rd

☆ Fibonacci Day.


24th

☆ Celebrate Your Unique Talent Day.


25th

☆ Gazpacho Soup Day. [from 'Red Dwarf']
☆ International Day for the Elimination of Violence Against Women.
☆ National Parfait Day. [USA]
☆ St. Catherine's Day.
☆ Te Aso Fiafia - 'Happy Day'. [Vaitupu, Tuvalu]


26th

☆  Constitution Day. [India]
☆ National Cake Day. [USA]



27th

☆ Maaveerar Naal - Great Heroes' Day. [Sri Lanka]
☆ Mitzvah Day International 2016. 
☆ Teacher's Day. [Spain]


28th

☆ Independence Day. [Albania]
☆ National French Toast Day. [USA]
☆ National Maize Day. [USA]


29th

☆ International Day of Solidarity with the Palestinian People.
☆ Square Dance Day.


30th

☆ Bonifacio Day. [Philippines]
☆ Cities For Life Day.
☆ Computer Security Day.
☆ International Self Harm Awareness Day.
☆ National Mousse Day. [USA]
☆ St. Andrew's Day. [Scotland, UK]
☆ Stay Home Because You're Well Day.


Movable

☆ Job Action Day. First Monday.
☆ Melbourne Cup Day. [Australia] First Tuesday.
☆ Stress Awareness Day. First Wednesday.
☆ International Project Management Day. First Thursday.
☆ International Stout Day. First Thursday.
☆ Men Make Dinner Day. First Thursday.
☆ Thanksgiving. [Liberia] First Thursday.
☆ Love Your Lawyer Day. First Friday.
☆ Children's Day. [South Africa] First Saturday.
☆ Health Day. [Turkmenistan] First Saturday.
☆ Orphan Sunday. First Sunday.
☆ Father's Day. [Estonia, Finland, Iceland, Norway, Sweden] Second Sunday.
☆ Grandparents Day. [South Sudan] Second Sunday.
☆ International Tongue Twister Day. Second Sunday.
☆ National Pupusa Day. [El Salvador] Second Sunday.
☆ Remembrance Sunday. [UK & Commonwealth] Second Sunday.
☆ Heir to the Throne's Birthday. [Tuvalu] Second Monday.
☆ World Quality Day. Second Thursday.
☆ GIS (Geographic Information Systems) Day. Third Wednesday.
☆ Beaujolais Nouveau Day. [France] Third Thursday.
☆ Use Less Stuff Day. [USA] Third Thursday.
☆ World Philosophy Day. Third Thursday.
☆ National Adoption Day. [USA] Third Saturday - Saturday before US Thanksgiving.
☆ World Day of Remembrance for Road Traffic Victims. Third Sunday.
☆ Thanksgiving. [USA] Fourth Thursday.
☆ Black Friday. Fourth Friday.
☆ Buy Nothing Day. Fourth Friday.
☆ National Day of Listening. [USA] Fourth Friday.
☆ National Flossing Day. [USA] Fourth Friday.
☆ International Aura Awareness Day. Fourth Sunday.
☆ Harvest Festival. [Turkmenistan] Last Sunday.


Weeks / Months

☆ Anti-Bullying Week. [UK] Third Week.
☆ Inter Faith Week. [UK] Third week, beginning Sunday.

☆ Lung Cancer Awareness Month.
☆ National Epilepsy Awareness Month. [USA]
☆ National Novel Writing Month.
☆ Native American Indian Heritage Month. [USA]
☆ Pancreatic Cancer Awareness Month.