National Girls' Night In Day2026 · Date · History
National Day Calendar’s proclamation archive states that Ketel One Botanical founded the observance in 2018 and set it annually for September 22.
About National Girls' Night In Day
National Girls' Night In Day is a privately created U.S. social observance held on September 22.
Ketel One Botanical introduced the campaign in 2018 around the idea of staying in and spending time with friends.
Why National Girls' Night In Day matters
The observance began as a spirits-brand campaign, so its origin is commercial rather than governmental.
Participation does not require alcohol; a night in can center on conversation, food, games, reading, crafts or other shared activities.
History of National Girls' Night In Day
A Ketel One Botanical release dated September 20, 2018 said National Girls' Night In would make its official debut on September 22.
National Day Calendar records Ketel One Botanical as the founder and its private registrar proclamation as an annual September 22 observance.
The 2018 launch connected September 22 with the first day of fall that year.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
Ketel One Botanical
The brand’s 2018 launch release and National Day Calendar history attribute the observance to Ketel One Botanical.
National Day Calendar Registrar
Private National Day Calendar proclamation and 2018 Ketel One Botanical launch campaign
First documented observance
The 20 September 2018 brand release says the observance would make its official debut on September 22.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
3 fields not established in reviewed sources
Also known as
National Girls’ Night In Day, National Girls' Night In Day
How to Observe National Girls' Night In Day
Plan a relaxed evening at home with friends.
Cook or order a shared meal.
Choose a book, movie, game or craft everyone can enjoy.
Make participation inclusive of people who do not drink alcohol.
National Girls' Night In Day Facts
National Girls' Night In Day is observed on September 22.
Ketel One Botanical founded the observance in 2018.
The first documented edition debuted on September 22, 2018.
It is a private brand-created observance, not a statutory holiday.
Alcohol is not required to participate.
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
Ketel One Botanical / PR Newswire — 2018 launch (opens in a new tab)
National Day Calendar — private proclamation (opens in a new tab)
National Day Calendar — National Girls' Night In Day proclamation (opens in a new tab)
Observance Registry
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is National Girls' Night In Day?
22 September The documented recurrence rule is: 22 September each year within the cited brand-created observance..
Does National Girls' Night In Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is National Girls' Night In Day an official public holiday?
The reviewed sources verify it within this scope: United States / Ketel One Botanical brand-created observance. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes National Girls' Night In Day?
The reviewed sources identify National Day Calendar Registrar as the proclaiming or establishing body. The proposer or originator is recorded separately as Ketel One Botanical.
Is National Girls' Night In Day international or country-specific?
This observance is specific to United States. Its fuller verified scope is: United States / Ketel One Botanical brand-created observance.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-09-10.
When is National Girls' Night In Day?
It is observed on September 22.
Who created the observance?
Ketel One Botanical introduced the campaign in 2018.
When was the first edition?
A 2018 brand release described September 22, 2018 as its official debut.
Do you have to drink alcohol to participate?
No. The observance can be marked with any inclusive at-home social activity.
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