flag day: meaning, definition, pronunciation and examples
C1Formal, Historical, Technical (computing)
Quick answer
What does “flag day” mean?
A day on which a national flag is displayed or a specific commemorative event related to a flag or national symbol is held.
Audio
Pronunciation
Definition
Meaning and Definition
A day on which a national flag is displayed or a specific commemorative event related to a flag or national symbol is held.
1. In the UK, specifically 14 June, the anniversary of the day in 1965 when the Red Ensign was replaced by the Union Flag as the national flag. 2. In the US, a day designated for the display of the national flag (e.g., Flag Day on June 14). 3. In computing (chiefly UK), a day when a significant change is made to a system, requiring updates.
Dialectal Variation
British vs American Usage
Differences
In the UK, 'Flag Day' primarily refers to 14 June 1965. In the US, 'Flag Day' (often capitalized) is the annual observance on 14 June celebrating the adoption of the Stars and Stripes. The computing sense is more common in UK English.
Connotations
UK: Historical, specific date. US: Patriotic, ceremonial. Computing: Disruptive, mandatory change.
Frequency
Higher frequency in US English due to annual observance. In UK English, it's lower frequency and more historical/technical.
Grammar
How to Use “flag day” in a Sentence
[observe/celebrate] + Flag DayFlag Day + [is/falls on] + [date][system/software] + has + a flag dayVocabulary
Collocations
Examples
Examples of “flag day” in a Sentence
verb
British English
- The team will flag-day the new network protocol next Tuesday.
adjective
British English
- We're preparing for the flag-day deployment.
American English
- The Flag Day parade is a local tradition.
Usage
Meaning in Context
Business
Rare, except in IT project management to denote a major switchover date.
Academic
Used in historical or political science texts discussing national symbols.
Everyday
Used in the US context; less common in UK everyday speech.
Technical
Common in UK computing to denote a day of major system change.
Vocabulary
Synonyms of “flag day”
Vocabulary
Antonyms of “flag day”
Watch out
Common Mistakes When Using “flag day”
- Using 'Flag Day' to refer to any day with flags flying (e.g., sporting events).
- Confusing the UK historical date with the US annual holiday.
- Capitalization inconsistency: 'Flag Day' is typically capitalized when referring to the official US holiday.
FAQ
Frequently Asked Questions
No, Flag Day (June 14) is a national observance but not a federal public holiday.
It commemorates 14 June 1965, when the Union Flag (Union Jack) officially replaced the Red Ensign as the national flag of the UK.
Yes, in UK technical jargon (especially computing), it can be used informally as a verb meaning to schedule a major change for a specific day, e.g., 'We'll flag-day the release in July.'
It derives from the specific, one-time historical UK 'Flag Day', metaphorically applied to a single day of mandatory change, as opposed to a gradual rollout.
A day on which a national flag is displayed or a specific commemorative event related to a flag or national symbol is held.
Flag day is usually formal, historical, technical (computing) in register.
Flag day: in British English it is pronounced /ˈflæɡ ˌdeɪ/, and in American English it is pronounced /ˈflæɡ ˌdeɪ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “It's a real flag day for the IT department. (computing, UK)”
Learning
Memory Aids
Mnemonic
Imagine a FLAG being raised on a specific DAY on the calendar—it's a day set aside for the flag.
Conceptual Metaphor
A DAY IS A CONTAINER FOR A SYMBOLIC EVENT (The day contains the flag's significance).
Practice
Quiz
In UK computing jargon, what does 'flag day' most specifically refer to?