- Number of holidays
- 23
- Day of the year
- 286
- Days left in the year
- 79
International Day for Failure was created by the Finnish organization Day for Failure to celebrate mistakes as essential to learning, innovation, and personal growth — Finland’s culture of embracing failure has been cited as a factor in its educational success and entrepreneurial ecosystem. ADA Lovelace Day was established in 2009 by Suw Charman-Anderson to celebrate Ada Lovelace — the mathematician who wrote the first algorithm intended for Charles Babbage’s Analytical Engine around 1843 — and to raise the visibility of women in STEM. Breast Cancer Awareness Day is the daily focus within October’s broader Breast Cancer Awareness Month, observed on October 13 to drive mammography screening and support research for the most commonly diagnosed cancer in women worldwide. English Language Day was established by the UN Department of Global Communications to mark October 13, 1945, when the United Nations was founded — honoring the English language as one of the UN’s six official languages.
All holidays on October 13
National No Bra Day
ADA Lovelace Day
Breast Cancer Awareness Day
Columbus Day
Disaster Day
English Language Day
Herpes Awareness Day
International Day for Disaster Risk Reduction
International Day for Natural Disaster Reduction
International Skeptics Day
Iris Film Festival
NATIONAL FACE YOUR FEARS DAY
National Kick Butt Day
National M&M Day
National Train Your Brain Day
National Transfer Money to Your Son Day
Navy Birthday
Prince Louis Rwagasore Day
World Thrombosis Day
Yorkshire Pudding Day
About October 13
October 13 Q&As
What is the most popular holiday on October 13?
On October 13, ADA Lovelace Day is the most globally recognized STEM equity observance, celebrating the first computer programmer. International Day for Failure is the most widely recognized innovation observance, and Breast Cancer Awareness Day is the most significant health awareness observance.
What awareness days are on October 13?
October 13 includes Breast Cancer Awareness Day, raising awareness for the most commonly diagnosed cancer in women worldwide, and Herpes Awareness Day, reducing stigma for infections affecting an estimated 3.7 billion people with HSV-1 and 491 million with HSV-2.
What countries celebrate holidays on October 13?
October 13 observances span Finland (inspiration for International Day for Failure) and the U.S., which hosts ADA Lovelace Day, Breast Cancer Awareness Day, Herpes Awareness Day, and National Transfer Money to Your Son Day. English Language Day and International Day for Failure are observed globally.
