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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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during days

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "during days" is not commonly used in written English and may sound awkward.
It can be used when referring to a specific period of time that spans multiple days, but it is more natural to use it in a more specific context. Example: "We will be conducting the experiment during days of high humidity."

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Twenty colonies were randomly selected every day during days 2 15.

In terms of patterns of prescribing, mean daily dose in the NMS cohort increased over the 30 day period- from 241.7 mg/day during days 1 15 to 346.9 mg/day during days 16 30.

Only during days near port are they closely monitored.

News & Media

The New York Times

But they can also take wet feet during days of rain.

News & Media

The New York Times

What this means, in practice, is a range of activity during days, weeks, or even years.

News & Media

The New Yorker

The hospital's upper floors were badly damaged during days of fierce shelling by the military, doctors said.

News & Media

The New York Times

He vowed to fix the problem, but backed down after cabbies blocked the streets during days of protest.

News & Media

The Economist

At least 30 people have reportedly been killed in Sudan during days of rioting over sudden fuel price hikes.

News & Media

Independent

1Average during days 1 26.

4Average during days 26 40 First column: type of cycle.

She continues teaching during days, painting at nights, and giving thanks on Sundays.

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Expert writing Tips

Best practice

When using "during days", be specific about the timeframe or conditions you are describing. For instance, "during days of high pollen count" or "during days 3 to 5 post-treatment" adds clarity.

Common error

Don't use "during days" without providing context or a range. Saying "the experiment was conducted during days" is less informative than "the experiment was conducted during days 10-12".

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

4.1/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "during days" functions primarily as a temporal prepositional phrase. It specifies a period or timeframe within which an event or condition occurs. Ludwig examples show it commonly used to indicate when certain phenomena or actions take place.

Expression frequency: Very common

Frequent in

Science

63%

News & Media

33%

Wiki

4%

Less common in

Formal & Business

0%

Reference

0%

Academia

0%

Ludwig's WRAP-UP

The phrase "during days" serves as a temporal marker, specifying an action or condition occurs within a set number of days. Grammatically acceptable and commonly found in scientific and news contexts, its effectiveness hinges on providing a clear timeframe. Ludwig's analysis underscores the importance of avoiding vagueness by adding specific information about the period being referenced. Though it may sound awkward without context, the phrase is prevalent enough in academic and journalistic sources to be considered proper English.

FAQs

How can I rephrase "during days" to sound more formal?

For a more formal tone, consider using phrases like "over the course of days" or "throughout the duration of the days".

Is it better to say "during the day" or "during days"?

"During the day" generally refers to daylight hours, whereas "during days" refers to multiple 24-hour periods. The better option depends on the context.

What's a concise alternative to "during days"?

A concise alternative could be "over several days" or "across a few days" depending on the context.

How does "during days" differ from "in the days"?

"During days" specifies a period within a set of days, while "in the days" refers to a more general or nostalgic time in the past.

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Source & Trust

82%

Authority and reliability

4.1/5

Expert rating

Real-world application tested

Most frequent sentences: