Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
what a day
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "what a day" is correct and usable in written English.
You can use it to express surprise and/or admiration for a situation or occurrence. For example: "What a day! I'm so proud to be a part of this amazing event."
✓ Grammatically correct
News & Media
Sport
Travel
Alternative expressions(20)
what a loss
I am with you
it is honor for me
I am grateful that
I am well happy
I appreciate
I quite understand
I totally get it
what a privilege
I commend that
I am appreciative of that
welcome for that
interesting to know
I am very grateful
I fully know
I get overwhelmed
I am located
I am much obliged
I'm pleased that
what a sight
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Well, what a day.
News & Media
But what a day!
News & Media
What a day for Hampshire.
News & Media
What a day to ski.
News & Media
What a day yesterday, eh?
News & Media
What a day it's been.
News & Media
What a day yesterday was.
News & Media
"What a day," DiFelice said.
News & Media
6.19pm BST What a day.
News & Media
What a day for the big man.
News & Media
"What a day for Minnesota!" he said.
News & Media
Expert writing Tips
Best practice
Use "what a day" to punctuate a narrative or conversation, providing a concise summary of events or feelings experienced.
Common error
Avoid using "what a day" when a more specific description of the day's events would provide more clarity and impact.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "what a day" is as an exclamatory phrase. It serves to express a strong feeling or comment about the day that has passed. As shown in Ludwig, this exclamation is often used to punctuate the end of a recounting of events.
Frequent in
News & Media
55%
Sport
20%
Travel
10%
Less common in
Formal & Business
5%
Science
5%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "what a day" functions as an exclamatory expression used to encapsulate a feeling about a particular day, often indicating that it was eventful, significant, or memorable. As Ludwig AI confirms, it is grammatically correct and widely applicable in written English. It appears most frequently in news and media contexts, showcasing its versatility in expressing a range of emotions from exhaustion to satisfaction. While generally neutral to informal in tone, it’s best to reserve its use for situations where a concise expression of sentiment is appropriate, rather than in formal contexts requiring detailed descriptions.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
What an eventful day
Emphasizes the number of events that occurred during the day.
What a remarkable day
Highlights the unusual or noteworthy quality of the day.
What a memorable day
Focuses on the day's lasting impact and the likelihood of it being remembered.
It's been quite a day
Indicates that the day was long, intense, or challenging.
What a day it's been
Reorders the phrase for emphasis, retaining the same meaning.
What a crazy day
Highlights the chaotic or unpredictable nature of the day.
What an extraordinary day
Emphasizes how exceptional the day was.
What a hectic day
Highlights the busy and rushed nature of the day.
What a challenging day
Focuses on the difficult or demanding aspects of the day.
What an unbelievable day
Expresses astonishment at the day's events.
FAQs
How can I use "what a day" in a sentence?
You can use "what a day" as a standalone exclamation to express surprise, relief, or exhaustion after a significant day. For example, "What a day! I finally finished the project."
What are some similar phrases to "what a day" that I can use?
Alternatives include phrases like "what an eventful day", "it's been quite a day", or "what a memorable day" depending on the context.
Is it appropriate to use "what a day" in formal writing?
While grammatically correct, "what a day" is generally more suited for informal contexts. In formal writing, it's better to provide a more detailed description of the day's events.
What does the phrase "what a day" typically imply?
The phrase "what a day" generally implies that the day was either particularly good, particularly bad, or simply full of noteworthy events.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested