days on which

USAGE SUMMARY

"days on which" is a correct and usable phrase in written English.
This phrase can be used to refer to any particular days that you want to mention or to compare two different days. For example: "I remember the days on which we used to just go outside and spend all day playing together."

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Which sports figure instituted "silence days," on which no one was allowed to talk during practice?

The New Yorker

Midwives will also conduct regular village health meetings during the days on which fixed-day services take place.

BMC Pediatrics

'Match days' (Ms) are defined as days on which all teams played an official tournament match on the same day.

BMJ Open

These were the days on which Lear had epileptic seizures.

The Guardian - Books

Moreover there were 890 days on which the senate decreed there would be sacrifices.

Massachusetts Institute of Technology

Conditions of strong synoptically generated wind are considered as well as days on which thunderstorms occurred.

Journal of Wind Engineering and Industrial Aerodynamics

These are the days on which they know they will have a chance to win.

The Washington Post

"We are also thinking about offering the tests on days on which we are now closed".

The New York Times

Observant Jews requested an exemption for holy days on which they were forbidden to drive.

The New York Times

But there were also 13 days on which no rain, or less than 1mm, fell.

The Guardian

"These documents show the days on which he was paid," Mr. McClellan said.

The New York Times

Expert writing Tips

Best practice

Use "days on which" to clearly specify particular days when an event or condition applies, ensuring precision in your writing.

Common error

Avoid using "days on which" in informal contexts; opt for simpler alternatives like "days that" or "when" to maintain a natural tone.

Linguistic Context

The phrase "days on which" functions as a relative clause, specifically an adjective clause, that modifies a noun phrase (days). It introduces information that defines or specifies which days are being referred to. Ludwig provides numerous examples demonstrating this function across diverse contexts.

Expression frequency: Very common

Frequent in

Science

39%

News & Media

37%

Academia

24%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

The phrase "days on which" functions as a relative clause that specifies particular days. According to Ludwig, it is grammatically correct and used across varied contexts. While versatile, it is more common in formal writing, as seen in academic and scientific publications, although it also appears frequently in news media. For less formal settings, simpler alternatives like "days that" or "when" may be more appropriate. When clarity and precision are paramount, "days on which" is an excellent choice, as it effectively narrows down a broader timeframe to specific relevant days.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

the days that

Adding "the" provides a slightly more specific reference to a defined set of days.

days that

This is a more straightforward and less formal way to express the same concept.

dates that

This alternative replaces the formal "days on which" with a more concise and common phrase.

days for which

This rephrasing changes the preposition but retains the basic meaning of identifying days related to something.

specific days when

This alternative explicitly highlights the specificity of the days being referenced.

certain days that

This phrase implies that not all days are being considered, only some particular ones.

occasions when

This alternative shifts the focus slightly from specific days to more general occasions.

times when

This is a broader alternative, referring to moments or periods rather than specific days.

instances when

This phrase emphasizes specific occurrences or events rather than the days themselves.

periods when

This alternative is more suitable when referring to extended durations rather than specific days.

FAQs

How can I use "days on which" in a sentence?

You can use "days on which" to specify particular days when something happens or is true. For example, "These are the "days on which" they know they will have a chance to win."

What's a less formal alternative to "days on which"?

Less formal alternatives include "days that" or simply using "when". For example, instead of "days on which services take place", you could say "days that services take place".

Is "days on which" always necessary, or can I use a simpler construction?

While grammatically correct, "days on which" can sometimes sound overly formal. Often, a simpler construction using "when" is sufficient and more natural. However, "days on which" may be preferred in formal or technical writing where precision is valued.

What is the difference between "days on which" and "on the days when"?

"Days on which" is typically used to define or specify certain days, while "on the days when" is used to describe what happens during those days. The former is more definitional, the latter more descriptive.