Evergreen date guide

What is celebrated on April 13?

For 2026, these source-backed observances resolve to Monday, April 13. Recurring rules can move in another year, so each record keeps its own date logic.

Date authority profile

What this date contains

7 unique authority records

The list is deduplicated at the public entity layer while retaining all research provenance behind each page.

0 stable or rule-calculated

0 fixed annual and 0 reusable rule-based records can be placed without inventing a new date.

0 edition-specific

Edition-specific dates appear only when the requested year matches the verified edition; variable and historical records remain gated.

2 explicit country-scope records

Country scope stays attached to the underlying record instead of being generalized into a worldwide observance.

0 reviewed in-depth guides

These entities add reviewed meaning, history, activities, facts and FAQs without rewriting the authority facts.

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Topics represented on April 13

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Civic, Remembrance & History 2 Faith, Tradition & Spirituality 1 Health, Wellness & Awareness 1 Workplace, Professions & Appreciation 1 Food, Drink & Hospitality 1 Arts, Entertainment & Lifestyle 1

7 date-resolved records

All observances on this date

Source-backedEdition Specific

Bright Monday

13 April 2026 in the Orthodox Church in America calendar · Orthodox Church in America / 2026 liturgical calendar

The Orthodox Church in America’s daily readings identify 13 April 2026 as Bright Monday, the Monday after Pascha.

Source-backedFixed Annual

International FND Awareness Day

13 April annually · FND Hope International / awareness campaign

FND Hope’s advisory-board material states that it supports the annual International FND Awareness Day on April 13, with older first-party campaign material documenting the same date.

Source-backedFixed Annual

International Plant Appreciation Day

13 April · International / informal plant-appreciation observance

Antigua and Barbuda’s Ministry of Agriculture states that International Plant Appreciation Day is observed every year on April 13, and National Today independently lists the same annual dat…

Source-backedFixed Annual

National Borinqueneers Day

13 April · United States recognition of the 65th Infantry Regiment / Borinqueneers

U.S. Senate Resolution 641 (2020) and subsequent federal recognition

Source-backedFixed Annual

National Make Lunch Count Day

13 April · United States / TGI Fridays-created lunch-break campaign observance

National Day Calendar and launch-era material attribute the 2016 observance to TGI Fridays and place it on April 13.

Source-backedFixed Annual

National Silly Earring Day

13 April · Creator-led lifestyle observance / TheTravelBugBite and Oddity Cart

The creator’s own 2021 announcement states that National Silly Earring Day was founded as an annual observance on April 13.

Source-backedFixed Annual

Thomas Jefferson's birthday

13 April annually · United States / federal birthday commemoration

36 U.S.C. §141 requires an annual proclamation inviting observance of April 13 in commemoration of Thomas Jefferson's birthday.

How this date is built

This page is assembled from verified fixed dates, reusable recurrence rules, and target-year records whose edition matches 2026. Variable, historical or unresolved records are not silently forced onto this date.

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