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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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on a single day

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase 'on a single day' is correct and usable in written English.
You can use it to emphasize that something happened on a single particular day, or to emphasize the frequency of something occurring within a day. For example: "The company sold 50,000 units of their new product on a single day."

✓ Grammatically correct

News & Media

Science

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

In most jurisdictions elections are held on a single day rather than on staggered days.

But on a single day in September 2003, Dr. Segarra hit 19 diagnostic holes in one.

News & Media

The New York Times

Amazon took 3.5m orders on a single day last year.

Many millions can attend the event on a single day.

News & Media

The Guardian

Since then, as many as 40 people have reached the summit on a single day.

Nor could I imagine spending so much money on a single day.

News & Media

The New York Times

For example, on a single day, Oct. 19 , 1987 stocks lost an astounding 23percentt.

News & Media

The New York Times

On a single day, Thursday, May 15th, the Times contained the following.

News & Media

The New Yorker

On a single day in late August, there were six attacks.

News & Media

The New York Times

Records show that more than $10,000 arrived on a single day in 2003.

News & Media

The New York Times

On a single day she dripped the reveal of her collection as its shoot took place.

News & Media

The Guardian
Show more...

Expert writing Tips

Best practice

When comparing activities across different time spans, "on a single day" is useful to establish a clear benchmark for contrasting performance or events.

Common error

Avoid using "on a single day" when the context already implies a single day. For example, instead of "The event happened on a single day, Tuesday", simply say "The event happened on Tuesday".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

82%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "on a single day" functions as an adverbial phrase, modifying a verb or clause to specify the timing of an action or event. As evidenced by Ludwig, it emphasizes the occurrence within a single 24-hour period.

Expression frequency: Very common

Frequent in

News & Media

75%

Science

20%

Encyclopedias

2%

Less common in

Formal & Business

1%

Wiki

1%

Reference

1%

Ludwig's WRAP-UP

In summary, "on a single day" functions as an adverbial phrase used to specify the timing of an event, emphasizing its occurrence within a 24-hour period. Ludwig AI shows that it is grammatically correct and very commonly used, especially in News & Media and Science contexts, to highlight the concentration or intensity of events. While alternatives like ""in one day"" exist, "on a single day" adds emphasis to the singularity of the day. The phrase should be used to spotlight events happening within a specific day, but avoid overuse in redundant contexts. As such, it's a versatile phrase for stressing temporal specificity.

FAQs

How can I use "on a single day" in a sentence?

Use "on a single day" to emphasize that an event or activity occurred within the span of one day, highlighting the concentration of events. For example, "The store sold more items "in one day" than it usually sells in a week."

What can I say instead of "on a single day"?

You can use alternatives like ""in one day"", "within 24 hours", or "during a single day depending on the context."

Is it more appropriate to say "in one day" or "on a single day"?

Both phrases are correct and largely interchangeable. "In one day" is more concise, while "on a single day" adds emphasis to the singularity of the day.

What is the difference between "on a single day" and "every single day"?

"On a single day" refers to a specific, isolated day, while "every single day" indicates a daily occurrence or habit. The phrases have opposite meanings related to frequency.

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Source & Trust

82%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Most frequent sentences: