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Evergreen date guide

What is celebrated on October 13?

See the observances and verified observance-history milestones attached to October 13. Each observance keeps its own source and date details.

Verified history

On this date in observance history

Today in history →

Selected observance milestones connected to this date, based on reviewed sources.

2023
Institutional decision

National Space Day

The Department of Space notification is dated Bengaluru, 13 October 2023.

2022
First observance

World Novel Week

UNESCO’s Creative Cities article explicitly describes the observance beginning 13 October 2022 as the very first edition of World Novel Week.

About this date

What this date contains

6 observances

Each observance is shown once in this view, with its own source and scope details available on the guide page.

0 repeat predictably

0 use a fixed annual date and 0 follow a reusable calendar rule.

0 are edition-specific

These dates are shown only for the year or edition that has been confirmed.

2 have a country-specific scope

Country-specific observances are not presented as worldwide events.

6 have in-depth guides

These pages include reviewed meaning, history, activities, facts and FAQs.

Curated global anchors

Major global guides on October 13

See the collection →

A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.

Reviewed depth

Other in-depth guides on October 13

Source-backedFixed AnnualIn-depth guide

Herpes Awareness Day

13 October · United States / herpes-awareness observance

National Today places Herpes Awareness Day on October 13 annually, and AnydayGuide independently lists National Herpes Awareness Day on October 13.

Source-backedFixed AnnualIn-depth guide

International Civility for the Girl Child Day

13 October · International / creator-documented girl-child civility and leadership observance

Louisa Akaiso is identified as the 2020 creator of the October 13 observance; Women Who Win Africa’s current first-party site continues to list International Civility for the Girl Child Day…

Source-backedFixed AnnualIn-depth guide

U.S. Navy Birthday

13 October annually · United States / U.S. Navy anniversary

Naval History and Heritage Command identifies 13 October as the date celebrated as the U.S. Navy’s birthday.

Source-backedFixed AnnualIn-depth guide

World Thrombosis Day

13 October · Organizer-backed international observance

International Society on Thrombosis and Haemostasis (ISTH)

Explore the mix

Topics represented on October 13

All topics →
Health, Wellness & Awareness 3Civic, Remembrance & History 2Community, Causes & Advocacy 1
6 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

Herpes Awareness Day

13 October · United States / herpes-awareness observance

National Today places Herpes Awareness Day on October 13 annually, and AnydayGuide independently lists National Herpes Awareness Day on October 13.

Source-backedFixed AnnualIn-depth guide

International Civility for the Girl Child Day

13 October · International / creator-documented girl-child civility and leadership observance

Louisa Akaiso is identified as the 2020 creator of the October 13 observance; Women Who Win Africa’s current first-party site continues to list International Civility for the Girl Child Day…

Source-backedFixed AnnualIn-depth guide

U.S. Navy Birthday

13 October annually · United States / U.S. Navy anniversary

Naval History and Heritage Command identifies 13 October as the date celebrated as the U.S. Navy’s birthday.

Source-backedFixed AnnualIn-depth guide

World Thrombosis Day

13 October · Organizer-backed international observance

International Society on Thrombosis and Haemostasis (ISTH)

How dates are selected

This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.

Read the methodology →