August is the animal month of the calendar International Cat Day on the 8th, World Lion Day on the 10th, World Elephant Day on the 12th and International Dog Day on the 26th and one of the strongest months of the year for organic reach.
To help you plan your brand's campaigns, Instagram giveaways and social media content, we've put together the complete calendar of special days in August 2027.
Special days in August 2027
1 August (Sunday)
International Friendship Day 🤝 (observed on the first Sunday in the US, India and several other countries — the UN's is 30 July)
World Wide Web Day 🌐
2 August (Monday)
International Twins Day 👯
Coloring Book Day 🖍️
3 August (Tuesday)
World Watermelon Day 🍉
National Tree Day 🌳
4 August (Wednesday)
Assistance Dog Day 🦮
International Clouded Leopard Day 🐆
Chocolate Chip Cookie Day 🍪
5 August (Thursday)
International Traffic Light Day 🚦
Oyster Day 🦪
6 August (Friday)
Hiroshima Day 🕊️
INTERNATIONAL BEER DAY 🍺 (first Friday)
Root Beer Float Day 🥤
7 August (Saturday)
International Lighthouse Day 🗼
Beach Party Day 🏖️
8 August (Sunday)
INTERNATIONAL CAT DAY 🐱
Happiness Happens Day 😊
9 August (Monday)
INTERNATIONAL DAY OF THE WORLD'S INDIGENOUS PEOPLES 🪶 (UN)
Nagasaki Day 🕊️
Book Lovers' Day 📚
International Coworking Day 💼
10 August (Tuesday)
World Lion Day 🦁
Lazy Day 😴
S'mores Day 🍫
11 August (Wednesday)
World Calligraphy Day ✍️
12 August (Thursday)
INTERNATIONAL YOUTH DAY 🙌 (UN)
World Elephant Day 🐘
Vinyl Record Day 💿
13 August (Friday)
INTERNATIONAL LEFT-HANDERS DAY ✋
K-Pop Day 🎤
Prosecco Day 🥂
14 August (Saturday)
Mawlid — the Prophet's birthday 🌙 (subject to the sighting of the moon)
World Lizard Day 🦎
15 August (Sunday)
Obon begins in Japan 🏮
National Relaxation Day 🛀
16 August (Monday)
Roller Coaster Day 🎢
Rum Day 🥃
17 August (Tuesday)
Black Cat Appreciation Day 🐈⬛
Thrift Shop Day 👕
18 August (Wednesday)
World Breast Cancer Research Day 💗
Never Give Up Day 💪
Bad Poetry Day 📝
19 August (Thursday)
WORLD HUMANITARIAN DAY 🤲 (UN)
WORLD PHOTOGRAPHY DAY 📷
Aviation Day ✈️
20 August (Friday)
World Mosquito Day 🦟
Radio Day 📻
Bacon Lovers Day 🥓
21 August (Saturday)
International Day of Remembrance and Tribute to the Victims of Terrorism 🕯️ (UN)
Senior Citizens Day 👵
22 August (Sunday)
International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief 🕊️ (UN)
World Plant Milk Day 🥛
Take Your Cat to the Vet Day 🐈
23 August (Monday)
International Day for the Remembrance of the Slave Trade and its Abolition ✊🏾 (UNESCO)
International Blind Dog Day 🦮
24 August (Tuesday)
Waffle Day 🧇
Pluto Demoted Day 🪐
25 August (Wednesday)
LA TOMATINA 🍅 (last Wednesday of August)
Banana Split Day 🍌
Whiskey Sour Day 🥃
26 August (Thursday)
INTERNATIONAL DOG DAY 🐕
Toilet Paper Day 🧻
27 August (Friday)
Banana Lovers Day 🍌
Tarzan Day 🌴
28 August (Saturday)
Red Wine Day 🍷
Bow Tie Day 🎀
29 August (Sunday)
INTERNATIONAL DAY AGAINST NUCLEAR TESTS ☢️ (UN)
More Herbs Less Salt Day 🌿
30 August (Monday)
International Day of the Victims of Enforced Disappearances 🕯️ (UN)
International Whale Shark Day 🦈
Beach Day 🏖️
31 August (Tuesday)
INTERNATIONAL OVERDOSE AWARENESS DAY 💜
International Day for People of African Descent ✊🏾 (UN)
Trail Mix Day 🥜
Social media post ideas for August 2027
August is the best organic-reach month of the year, and the reason is simple: animals. International Cat Day on the 8th, World Lion Day on the 10th, World Elephant Day on the 12th, Black Cat Appreciation Day on the 17th, International Dog Day on the 26th and International Whale Shark Day on the 30th consistently outperform almost everything else on the calendar, for brands in every category.
Cat Day and Dog Day in particular are among the few dates where a completely unrelated brand can post something light and still be welcomed rather than eye-rolled.
World Photography Day on 19 August is the single best user-generated-content date of the year asking your audience for a photo on that day gets a response rate you won't match in any other month. It shares the date with World Humanitarian Day, so if your brand has a cause commitment, that's the more substantial angle.
International Left-Handers Day on the 13th is an underrated one: roughly one in ten people is left-handed, and almost no brand marks it, which means very low competition for a highly identifiable audience.
For lighter reach, the month is full of easy wins: International Beer Day on the 6th, Book Lovers' Day on the 9th, La Tomatina on the 25th and Red Wine Day on the 28th.
Giveaway dates and campaign ideas for August
August is the month to lean into animals and photography, because both mechanics produce content rather than just entries.
Run a pet-photo giveaway on International Cat Day, 8 August, and repeat it for dogs on 26 August two campaigns, two audiences, both with unusually high entry rates. Build a photo-contest giveaway for World Photography Day on the 19th, which gets you a month's worth of usable user content in a single day.
With Simpliers you can run Instagram giveaways in seconds, transparently and verifiably.
