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Evergreen date guide

What is celebrated on July 31?

See the observances and verified observance-history milestones attached to July 31. 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.

2020
First observance

International Lifeguard Appreciation Day

E&A calls its July 31, 2021 event the second annual International Lifeguard Appreciation Day and elsewhere states that the first-ever day was launched in 2020.

2006
Later action

Sir Seretse Khama Day

The 2006 Act revoked the 1992 order while retaining Sir Seretse Khama Day (1st July) in the statutory Schedule.

1990
Institutional decision

National Day

The official legislative record dates Law No. 10 to 31 July 1990; it notes parliamentary adoption on 30 July and publication on 1 August.

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.

Reviewed depth

Other in-depth guides on July 31

Source-backedFixed AnnualIn-depth guide

Harry Potter’s birthday

31 July · Harry Potter / Wizarding World fictional-character birthday convention

HarryPotter.com, the official Wizarding World site, identifies July 31 as Harry Potter’s fictional birthday and has published official birthday celebrations tied to that date.

Source-backedFixed AnnualIn-depth guide

Hawaiian Flag Day (Lā Hae Hawaiʻi)

31 July · Hawaiʻi / Hawaiian flag commemoration supported by 1989 state legislative resolutions

Hawaiʻi HCR 185 H.D. 1 requested July 31 be designated “Lā Hae Hawaiʻi” as Hawaiian Flag Day; the companion House resolution used the same date and name.

Source-backedFixed AnnualIn-depth guide

International Lifeguard Appreciation Day

31 July · Lifeguarding-community observance; international in name, with current RNLI participation

The RNLI identifies July 31 as International Lifeguard Appreciation Day in its 2026 anniversary materials and news releases.

Source-backedFixed AnnualIn-depth guide

Martyrdom Day of Shaheed Udham Singh

31 July · India / national remembrance context

India’s Ministry of Information and Broadcasting states that Shaheed Udham Singh’s martyrdom day is observed on 31 July every year.

Source-backedRule Based AnnualIn-depth guide

National Talk in an Elevator Day

Last Friday in July · United States / informal social observance

National Day Calendar and elevator-industry company TK Elevator independently define the recurrence as the last Friday in July rather than a fixed month/day.

Source-backedFixed AnnualIn-depth guide

World Ranger Day

31 July · international ranger remembrance and professional-recognition observance led by the International Ranger Federation with The Thin Green Line

International Ranger Federation first-party material verifies July 31, identifies the observance as an IRF initiative promoted with The Thin Green Line and confirms current annual stewardsh…

Explore the mix

Topics represented on July 31

All topics →
Civic, Remembrance & History 3Workplace, Professions & Appreciation 2Celebrations & Social 1
6 observances

All observances on this date

Source-backedFixed AnnualIn-depth guide

Harry Potter’s birthday

31 July · Harry Potter / Wizarding World fictional-character birthday convention

HarryPotter.com, the official Wizarding World site, identifies July 31 as Harry Potter’s fictional birthday and has published official birthday celebrations tied to that date.

Source-backedFixed AnnualIn-depth guide

Hawaiian Flag Day (Lā Hae Hawaiʻi)

31 July · Hawaiʻi / Hawaiian flag commemoration supported by 1989 state legislative resolutions

Hawaiʻi HCR 185 H.D. 1 requested July 31 be designated “Lā Hae Hawaiʻi” as Hawaiian Flag Day; the companion House resolution used the same date and name.

Source-backedFixed AnnualIn-depth guide

International Lifeguard Appreciation Day

31 July · Lifeguarding-community observance; international in name, with current RNLI participation

The RNLI identifies July 31 as International Lifeguard Appreciation Day in its 2026 anniversary materials and news releases.

Source-backedFixed AnnualIn-depth guide

Martyrdom Day of Shaheed Udham Singh

31 July · India / national remembrance context

India’s Ministry of Information and Broadcasting states that Shaheed Udham Singh’s martyrdom day is observed on 31 July every year.

Source-backedRule Based AnnualIn-depth guide

National Talk in an Elevator Day

Last Friday in July · United States / informal social observance

National Day Calendar and elevator-industry company TK Elevator independently define the recurrence as the last Friday in July rather than a fixed month/day.

Source-backedFixed AnnualIn-depth guide

World Ranger Day

31 July · international ranger remembrance and professional-recognition observance led by the International Ranger Federation with The Thin Green Line

International Ranger Federation first-party material verifies July 31, identifies the observance as an IRF initiative promoted with The Thin Green Line and confirms current annual stewardsh…

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 →