Digital Marketing Tactics

The Ultimate 2021 Marketing Calendar

The Ultimate 2021 Marketing Calendar
The best way to achieve your marketing goals is by planning ahead with this essential 2021 marketing calendar.

Congratulations, you’ve decided to smash your marketing goals in 2021 and you’ve come to the right place to get started! Here at Optily, we love all things marketing, and we especially love making things easier for our clients. That’s why we’ve curated this simple, yet effective marketing calendar just for you.

This ultimate marketing calendar includes all the major dates and events throughout 2021 so that you can keep your advertising on theme and trendy!

We’ll break it down month by month, to keep it simple for you to check back at any time of year, and quickly find the information you need.

#1 January

Although January is nearly over already (I know, can you believe it?) there are still some interesting days and themes that your business could lean into. It’s never too late!

Dates not to be missed in January:

  • January 1st: New Year’s Day
  • January 8th: Winter Sales
  • January 18th: Blue Monday 🙁
  • January 18th: Martin Luther King Day
  • January 20th: Presidential Inauguration
  • January 28th: Data Protection Day

#2 February

Often thought of as the month of love, with Valentine’s being the major day but February has so much more to offer. Why not style your posts in festive Mardi Gras colors or show your support for your favorite football team in the Superbowl!

Dates not to be missed in February:

  • February 1st: Black History Month Starts
  • February 2nd: Groundhog Day
  • February 7th: Super Bowl
  • February 12th: Chinese New Year
  • February 14th: Valentine’s Day 💝
  • February 15th: President’s Day
  • February 16th: Mardi Gras

#3 March

The start of Spring month of the Irish! And, of course, you know we here at Optily love the Irish. In fact, March 17th may be our favorite day on the marketing calendar. March also boasts International Women’s Day and Wildlife day, alongside the luck and green of the Irish. Not to mention, most universities and schools have Spring Break in March, while the exact date is subject to where the school is located the majority spans the month of March!

Dates not to be missed in March:

  • March 3rd: World Wildlife Day
  • March 6th: Spring Break Starts
  • March 8th: International Women’s Day
  • March 17th: St. Patrick’s Day ☘

#4 April

While this month may start a little “tricky,” April has some amazing days to offer your marketing team’s creative minds. Let your customers see your business’s commitment to Mother Earth on International Earth day or plant a tree for Arbor Day!

Dates not to be missed in April:

  • April 1st: April Fool’s Day
  • April 2nd – 5th: Easter Weekend
  • April 12th: Start of Ramadan
  • April 22nd: Earth Day
  • April 30th: Arbor Day


May the Force be with you in May and to all your lovely mothers too. Show your company’s appreciation for the wonderful world of Star Wars and to each and every one of your amazing mothers too!

Dates not to be missed in May:

  • May 1st: May Day
  • May the 4th: Star Wars Day
  • May 5th: Cinco De Mayo
  • May 9th: Mother’s Day
  • May 31st: Memorial Day


Summer is finally here! And this month is all about color, fun, and love! Wear them rainbows with PRIDE as you show everyone your support for Pride Month and let’s not forget our fantastic Father’s on the 20th too.

Dates not to be missed in June:

  • June 1st: Pride Month
  • June 19th: Juneteenth
  • June 20th: Father’s Day
  • June 21st: World Music Day


July starts with a bang, quite literally, the bang and pop of fireworks high in the sky for Independence Day. Celebrate the coming together of nations from around the world in the greatest of sporting spectacles that is, the Olympic Games.

Dates not to be missed in July:

  • July 4th: Independence Day
  • July 23rd: Olympics Starts


You’ve made it all the way to August. That deserves a clap on the back and a cold beer in the sunny weather. This month is packed with sports and drinks. Maybe you could host a company BBQ to join in the festivities and share all your smiling employees’ faces on your social media.

Dates not to be missed in August:

  • August 6th: International Beer Day
  • August 8th: Olympics Closing Ceremony
  • August 19th: World Photography Day


While some may be sad that summer is over, the marketing opportunities never stop. If you’re in the school supplies business you’re marketing should be well underway, and for everyone else brighten up the month of September by celebrating one of the other great days shown below.

Dates not to be missed in September:

  • September 6th: Labor Day
  • September 11th: Patriot Day
  • September 18th: Oktoberfest
  • September 21st: International Day of Peace


Take a moment to relax, breathe, and look inwards early in October to celebrate World Mental Health Day. You’ll need to relax before the spooky season begins with Halloween just around the corner.

Dates not to be missed in October:

  • October 10th: World Mental Health Day
  • October 11th: Columbus Day/Indigenous Peoples’ Day
  • October 31st: Halloween 🎃


November boasts some fantastic cultural events from around the world. It is also one of the biggest sales months of the year. Black Friday has grown bigger than ever in the last year with so many businesses moving online. Make sure to utilize this opportunity as best as you can as it can set your business up for an incredible finish to the year. To jump ahead of the curve you could start planning your Black Friday strategy early with 32 Black Friday Statistics You Must Read: 2021 Market Share & Data Analysis.

Dates not to be missed in November:

  • November 4th: Diwali
  • November 11th: Veterans Day
  • November 25th: Thanksgiving
  • November 26th: Black Friday
  • November 28th: Hanukkah
  • November 29th: Cyber Monday


The holiday season is upon us again and it’s time to wrap up this marketing calendar. Hopefully, up until now, you’ve had a profitable and successful year, but there’s no time to relax just yet. Christmas is usually the biggest time for businesses and eCommerce stores will be hoping to get every sale they can. Finish the year off in style and show some festive spirit with these major holidays.

Dates not to be missed in December:

  • December 24th: Christmas Eve
  • December 25th: Christmas Day 🎅
  • December 26th: Kwanzaa Starts
  • December 26th: Boxing Day
  • December 31st: New Year’s Eve

That’s it, folks. 2021 wrapped up in a neat little bundle.

Now, of course, the year is never going to be that straightforward, but, hopefully, this calendar will keep your business up to date on all the major events of the year.

By being informed, you can utilize these days to show your company’s spirit, while also gaining an advantage with your marketing. Which will hopefully increase your return on ad spend investment and ultimately boost your profits. That’s also the goal, isn’t it?

We here at Optily hope you found The Ultimate 2021 Marketing Calendar helpful.

If you’re looking to improve your marketing plan even further, check out our blog Kick Start Your Marketing In 2021 – eCommerce Style.

And “hey” to the person reading this later in 2021! Hope all is going amazingly well for you.

More To Explore


Partnership Announcement: Conjura

We’re thrilled to announce that we’ve partnered with the Conjura, the eCommerce analysis platform for profit powered by data.

Let's keep in touch

Join the Optily newsletter!

Stay up-to-date on platform changes, digital marketing tactics, and industry news. We promise we won’t spam!


Optily has partnered with Clearco to provide you with financial tools to grow your business.

Start your funding application below. Approval can take as little as 24 hours and every funded account receives 3 months of Optily software for FREE.