on either day

USAGE SUMMARY

"on either day" is correct and usable in written English.
You can use it when referring to either of two days. For example, "We can meet on either day of the weekend."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

Within each laboratory, the timetable was adhered to and subjects were tested for particular studies on either day one or day two.

F1000Research

Law, Milloy and Brady were not available for interviews on either day.

The New York Times - Sports

Moore, O'Brien's principal jockey, was scarcely sighted on either day at Santa Anita.

The Guardian - Sport

In Exp. 1, estrous cycles of nonlactating cows were synchronized and then ovariectomized on either day 3 4 or 5 6 after ovulation.

Domestic Animal Endocrinology

Total antioxidant capacity increased (P<0.05) from 0 to 65 d but there were no significant differences between treatments on either day (P>0.05).

Livestock Science

It could be based on either day dreaming or drug taking, but we'll hold back on a definitive answer until she makes a video for it.

The Guardian - Music

The sheep treated with the ivermectin CRC on either Day 0 or 84 had significantly (p<0.05) better muscle scores and lower muscle pH 1 h post-slaughter than the untreated controls.

Veterinary Parasitology

Estrous cycles of Holstein cows (n = 18) were synchronized, and cows were ovariectomized on either day 3 to 4 or day 5 to 6 after ovulation during dominant follicle growth and selection.

Domestic Animal Endocrinology

However, c-peptide levels did not differ significantly between the groups on either day.

Annals of Intensive Care

Pilocarpine on either day induced status epilepticus; status epilepticus at P45 resulted in CA3 cell loss and spontaneous seizures, whereas P20 rats had no cell loss or spontaneous seizures.

Duke University

There was no significant difference in noradrenaline requirements, heart rates, SOFA scores, PEEP, or mechanical ventilation on either day 1 (see Table 1) or day 3. Echocardiography parameters for patients with normal systolic function on day 1 are included in Table 2.

Annals of Intensive Care

Expert writing Tips

Best practice

Use "on either day" to present a choice or possibility between two specific days. It implies that an action or event can occur on one day or the other, but not necessarily both.

Common error

Avoid using "on either day" when you mean "on any day". "On either day" specifies a choice between two days, while "on any day" suggests a possibility on any day within a larger timeframe.

Linguistic Context

The phrase "on either day" typically functions as an adverbial phrase, modifying a verb or clause to specify the time at which an action occurs. According to Ludwig, this usage is grammatically correct and common, offering a clear choice between two specified days.

Expression frequency: Very common

Frequent in

Science

61%

News & Media

32%

Wiki

3%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "on either day" is a grammatically sound and frequently employed construction used to denote a choice between two specific days. Ludwig AI confirms its correctness and usability. Predominantly found in scientific and news-related content, this phrase serves to indicate that an event or action is scheduled to occur on one of two days, offering flexibility in planning. When employing this phrase, ensure clarity regarding the two days in question to avoid any ambiguity, and differentiate its meaning from phrases like "on any day", which suggests a broader timeframe. Remember that while "on either day" presents a choice, "on both days" indicates that something happens on both days.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

on either of the two days

Specifies that the choice is limited to two particular days.

on either date

Substitutes "day" with "date", implying a specific point in time.

on one of those days

Uses "one of those days" to suggest a selection from a known set of days.

on the day in question

Refers to a specific day under discussion.

on the specified days

Indicates days that have been previously mentioned or determined.

on either occasion

Replaces "day" with "occasion", broadening the context to any event happening on those days.

on each of those days

Emphasizes that something occurs on both days, individually.

on any of the days

Suggests a less restrictive choice among multiple days.

on a particular day

Focuses on one unspecified day from a set of days.

during either day

Highlights the duration or timeframe within either of the two days.

FAQs

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

You can use "on either day" to indicate that something can happen on one of two specific days. For example, "The event will be held "on either day" of the weekend".

What phrases are similar to "on either day"?

Similar phrases include "on either of the two days", "on either date", or "on one of those days", depending on the specific context.

Is it correct to say "on either days"?

No, the correct phrase is "on either day". The word "either" indicates a choice between two options, so the singular form "day" should be used.

What is the difference between "on either day" and "on both days"?

"On either day" means something happens on one day or the other, but not necessarily both. "On both days" means something happens on both days. For example, "You can visit "on either day", Saturday or Sunday", versus "The park is open "on both days" of the weekend".