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Evergreen date guide

What is celebrated on August 21?

See the observances and verified observance-history milestones attached to August 21. 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.

1941
Institutional decision

Bill of Rights Day

GovInfo records the joint resolution approval date; Proclamation 2524 was issued November 27, 1941.

About this date

What this date contains

4 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.

1 have a country-specific scope

Country-specific observances are not presented as worldwide events.

4 have in-depth guides

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

Reviewed depth

Other in-depth guides on August 21

Source-backedFixed AnnualIn-depth guide

National Report Upcoding Fraud Day

21 August · United States / Hesch Firm fraud-reporting awareness campaign

National Day Archives currently records August 21 and attributes the observance to The Hesch Firm / Joel D. Hesch with a 2017 start. No surviving first-party Hesch founder source for this s…

Source-backedFixed AnnualIn-depth guide

Ninoy Aquino Day

21 August every year · Philippines — special nonworking holiday under Republic Act No. 9256

Republic Act No. 9256

Explore the mix

Topics represented on August 21

All topics →
Civic, Remembrance & History 2Arts, Entertainment & Lifestyle 1Celebrations & Social 1
4 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

National Report Upcoding Fraud Day

21 August · United States / Hesch Firm fraud-reporting awareness campaign

National Day Archives currently records August 21 and attributes the observance to The Hesch Firm / Joel D. Hesch with a 2017 start. No surviving first-party Hesch founder source for this s…

Source-backedFixed AnnualIn-depth guide

Ninoy Aquino Day

21 August every year · Philippines — special nonworking holiday under Republic Act No. 9256

Republic Act No. 9256

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 →