We design retail stores in Shopify and Woo-Commerce and part of the launch and on-going sales strategy has to include key dates in the Calendar. This can be a basis but your target audience will have other dates that are important to them so go through and add these in as a way to serve and market to your tribe in a meaningful way.
You have no excuses now to leave your marketing to the last minute, even if you don’t have an online store these dates will help you plan ahead with your 2019 social media and blogging way ahead of time.
There are many resources depending on your industry, for example this site shares all the National food days for each month. Link Here

JANUARY
1st New Year’s Day
20th Back to School Sales
26th Australia Day

FEBRUARY
5th Chinese New Year
14th Valentines Day

MARCH
3rd Clean Up Australia Day
5th Mardi Gras
6th Ash Wednesday
15th World Consumer Rights Day
17th Saint Patrick’s Day
21st Harmony Day

APRIL
1st April Fool’s Day
19th Good Friday
21st Easter Sunday
22nd Easter Monday
22nd Earth Day
25th Anzac Day

MAY
1st International Worker’s Day
4th Star Wars Day
12th Mother’s Day
14th Click Frenzy Mayhem

JUNE
10th Queen’s Birthday
29th Tour De France
30th End of Financial Year

JULY
4th Independence Day (US)
7th Valentine’s Day (China)
16th Amazon Prime Day
17th Emoji day

AUGUST

SEPTEMBER
Spring wedding season, Spring racing, music festival season begins
1st Father’s Day (AUS)
12th RUOK? Day

OCTOBER
Christmas season begins
31st Halloween
7th Labour Day
27th Diwali

NOVEMBER
5th Melbourne Cup
28th Thanksgiving
29th Black Friday

DECEMBER
2nd Cyber Monday
21th Super Saturday
22nd – 30th Hanukkah
24th Christmas Eve
25th Christmas Day
26th Boxing Day
31st New Year’s Eve