2023
Later action
World AMR Awareness Week
Rebranded World Antimicrobial Awareness Week as World AMR Awareness Week while retaining the WAAW acronym.
Evergreen date guide
What is celebrated on June 6?
See the observances and verified observance-history milestones attached to June 6. Each observance keeps its own source and date details.
Verified history
Today in history →On this date in observance history
Selected observance milestones connected to this date, based on reviewed sources.
2020
First observance
World Green Roof Day
The organizer identifies 2020 as the founding year and the event as a June 6 annual observance.
2019
Institutional decision
National Logistics Day
Logistics Plus announced the new annual observance on June 6, 2019.
2018
Later action
Democracy Day (Nigeria)
Announced that Democracy Day would move from May 29 to June 12, with the new national commemoration tied to the June 12, 1993 election.
2017
1956
First observance
Memorial Day
Ministry archival material says the first Memorial Day ceremony was held on June 6, 1956.
Reviewed depth
Other in-depth guides on June 6
Source-backedFixed AnnualIn-depth guide
D-Day / Normandy landings anniversary
U.S. Army material identifies 6 June 1944 as D-Day and provides source material on the Normandy invasion
Source-backedFixed AnnualIn-depth guide
Memorial Day
The Republic of Korea’s official Korea.net carries the presidential Memorial Day address on 6 June 2026, confirming the current observance identity and date.
Source-backedRule Based AnnualIn-depth guide
National Black Bear Day
The National Black Bear Festival states that it secured the National Black Bear Day designation and that the day is celebrated on the first Saturday in June each year.
Source-backedFixed AnnualIn-depth guide
National Drive-In Movie Day
DriveInMovie.com identifies June 6 as National Drive-In Movie Day, tied to the June 6, 1933 opening of Richard Hollingshead’s drive-in theater.
Source-backedFixed AnnualIn-depth guide
National Higher Education Day
Puget Sound Educational Service District identifies June 6 as National Higher Education Day and traces the 2015 founding to Izamar Olaguez and Marcie Hronis.
Source-backedRule Based AnnualIn-depth guide
National Prairie Day
The Missouri Prairie Foundation says it founded National Prairie Day in 2016 and observes it annually on the first Saturday in June; its current 2026 programme identifies 6 June 2026.
Explore the mix
All topics →Topics represented on June 6
11 observances
All observances on this date
Source-backedFixed AnnualIn-depth guide
D-Day / Normandy landings anniversary
U.S. Army material identifies 6 June 1944 as D-Day and provides source material on the Normandy invasion
Source-backedFixed AnnualIn-depth guide
Memorial Day
The Republic of Korea’s official Korea.net carries the presidential Memorial Day address on 6 June 2026, confirming the current observance identity and date.
Source-backedRule Based AnnualIn-depth guide
National Black Bear Day
The National Black Bear Festival states that it secured the National Black Bear Day designation and that the day is celebrated on the first Saturday in June each year.
Source-backedFixed AnnualIn-depth guide
National Drive-In Movie Day
DriveInMovie.com identifies June 6 as National Drive-In Movie Day, tied to the June 6, 1933 opening of Richard Hollingshead’s drive-in theater.
Source-backedFixed AnnualIn-depth guide
National Higher Education Day
Puget Sound Educational Service District identifies June 6 as National Higher Education Day and traces the 2015 founding to Izamar Olaguez and Marcie Hronis.
Source-backedRule Based AnnualIn-depth guide
National Prairie Day
The Missouri Prairie Foundation says it founded National Prairie Day in 2016 and observes it annually on the first Saturday in June; its current 2026 programme identifies 6 June 2026.
Source-backedRule Based AnnualIn-depth guide
National Trails Day®
American Hiking Society says it conceived National Trails Day in 1991 and launched the first event on 5 June 1993; current organizer material keeps the recurrence on the first Saturday in J…
Source-backedFixed AnnualIn-depth guide
Queensland Day
Queensland Government
Source-backedFixed AnnualIn-depth guide
Russian Language Day
United Nations language observance
Source-backedFixed AnnualIn-depth guide
World Green Roof Day
The official World Green Roof Day site says Dusty Gedge and Chris Bridgman started the June 6 observance in 2020; Green Roof Organisation independently promotes the current event.
Source-backedFixed AnnualIn-depth guide
World Pest Day
Global pest-management associations; public-facing information hosted by the National Pest Management Association
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 →