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
that day in question
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that day in question" is correct and usable in written English.
It is typically used to refer to a specific day that has been previously mentioned or is relevant to the discussion. Example: "I remember the events that unfolded that day in question, and they still impact me today."
✓ Grammatically correct
News & Media
Science
Alternative expressions(2)
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
2 human-written examples
I do not know exactly what happened that day in question, but I have no doubt that Mr. Matza acted responsibly and with complete care and concern.
News & Media
Sentencing, Judge Graham Cottle said: "It is not really clear why you did what you did on that day in question". He added: "I would have thought drinking must have had something to do with the way you reacted and had you been sober you would have reacted in a different way". An injured tropical turtle which was found washed up on a Cornwall beach has died, an aquarium says.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
When people speak of having a bad subway day, it is generally understood that the day in question took place in the subway.
News & Media
UPDATE: Mueller asserted that she didn't send the texts -- she said that on the day in question, November 19th, she was filming a reality show with Paris Hilton.
News & Media
Freer's office issued a brief statement today to confirm that on the day in question he was at a funeral in Inverness.
News & Media
A Raider spokesman said, that on the day in question, ticket phones were staffed until 2 30 p.m., at which time ticket offices opened.
News & Media
The attorney, who would only discuss the matter on condition of anonymity… said he spoke with two sources who corroborated that Perry and Leininger had met on the day in question and that the donor had advised the politician on the stock purchase.
News & Media
The attorney, who would only discuss the matter on condition of anonymity because he continues to have dealings with the U.S. Attorney's Office, said he spoke with two sources who corroborated that Perry and Leininger had met on the day in question and that the donor had advised the politician on the stock purchase.
News & Media
This is because the candle lighting is the time to discuss the principle of the day, its meaning, and what we will do to honor that principle on the day in question.
News & Media
The restaurant provided the list of food items that were served/sold on the day in question.
Science
"It seems as though that, yes, on the day in question, there may have been human error, but the human error was born out of a society that accepted lax management and had people working too long," said Edward P. Milstein, a lawyer whose firm is representing three ferry victims, including the family of Debra Castro, 39, a passenger who lost both legs and later died.
News & Media
Expert writing Tips
Best practice
When using "that day in question", ensure the context clearly establishes which day you are referring to, avoiding ambiguity for the reader.
Common error
Avoid using "that day in question" without first establishing the specific date or event you are referencing. This phrase assumes the reader already knows what day you mean.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that day in question" functions as a determiner phrase, specifically identifying a previously referenced day. It adds a layer of specificity and often implies that the events of that day are of particular interest or importance, as seen in Ludwig's examples.
Frequent in
News & Media
60%
Science
40%
Formal & Business
0%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, “that day in question” serves as a determiner phrase, pinpointing a specific day previously mentioned or understood within a given context. Ludwig AI states that the phrase is grammatically correct. Its communicative purpose is to emphasize the importance or relevance of that particular day, often implying scrutiny or significance, making it suitable for neutral to formal registers. Common contexts include News & Media and Science, while phrases such as "the specified day" or "the aforementioned day" can serve as alternatives. Remember to use it when the referenced day is clear, avoiding ambiguity in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
the day in consideration
Replaces "question" with "consideration", maintaining a formal tone but slightly shifting the focus to active deliberation.
the specified day
Emphasizes that the day has been previously identified or designated.
the aforementioned day
Formally references a day previously mentioned.
the day under discussion
Highlights that the day is currently being talked about or analyzed.
the relevant day
Focuses on the day's importance or pertinence to the matter at hand.
the particular day
Stresses the uniqueness or specificity of the day.
the day in point
Similar to "point in question", indicating the day that is directly relevant.
the day we're talking about
More conversational, directly referencing the topic of conversation.
the subject day
Treats the day as the subject of investigation or analysis.
that specific date
Replaces the more descriptive "day in question" with a more precise term.
FAQs
How can I use "that day in question" in a sentence?
Use "that day in question" to refer to a specific day that has already been mentioned or is otherwise clear from the context. For example, "The investigation focused on the events of "that day in question"."
What's a more formal alternative to "that day in question"?
A more formal alternative could be "the aforementioned day" or "the day under consideration". These phrases maintain a professional tone while still referring to a specific day previously discussed.
How does "that day in question" differ from "that particular day"?
"That day in question" implies a specific focus or scrutiny on the events of that day, whereas "that particular day" simply emphasizes the uniqueness or specificity of the day.
Is it ever incorrect to use "that day in question"?
It's incorrect to use "that day in question" if the context doesn't clearly establish which day you're referring to. Without prior context, the phrase becomes vague and confusing for the reader.
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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
4.5/5
Expert rating
Real-world application tested