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
some days long
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "some days long" is not correct in standard written English.
It may be intended to describe the duration of certain days, but it lacks clarity and proper structure. Example: "Some days long, I find it hard to stay focused on my tasks."
⚠ May contain grammatical issues
News & Media
Science
Wiki
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
1 human-written examples
During rush hour some days, long lines can form at traffic lights on Main Street North, especially if I-84 is backed up.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Some day, Long Run will not get away with sheer horsepower alone – and he may never be more vulnerable than when the engine is not quite tuned up.
News & Media
In northern Iraq, some gasoline lines are three days long.
News & Media
Some days her long swims have made her sick and other days they have not.
News & Media
And, frankly, one of the reasons I admire Clementine is the energy she's found to pursue a sacking; some days, after long hours, the most I can manage is to reach for the block button.
News & Media
The gas lines were five days long.
News & Media
They were talking about days long past.
News & Media
Sessions were 3 (IQR 2.5 4.0) days long.
Science
Rio+20 is three days long.
News & Media
My solo was three days long.
News & Media
Treatment cycles were 28 days long.
Science
Expert writing Tips
Best practice
To express the duration of time accurately, use phrases like "some days are long" or "certain days feel long" instead of "some days long". This ensures clarity and grammatical correctness.
Common error
Avoid using "some days long" as it can be misinterpreted or sound awkward. Always restructure the sentence to use a clearer and more grammatically correct expression to convey your intended meaning effectively.
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "some days long" functions as an adjectival phrase attempting to describe the duration of "some days". However, it deviates from standard grammatical conventions. Ludwig AI highlights that this construction is not considered correct in standard written English.
Frequent in
News & Media
35%
Science
33%
Wiki
32%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "some days long" is generally considered grammatically incorrect in standard English. As highlighted by Ludwig AI, it's better to opt for clearer alternatives like "some days are long" or "certain days feel long". While it appears in various contexts across news, science, and general writing, its inconsistent usage and grammatical issues make it unsuitable for formal or professional communication. To ensure clarity and correctness, always restructure the sentence with more appropriate phrasing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
certain days are lengthy
Emphasizes the perceived duration of specific days.
some days feel long
Focuses on the subjective feeling of time passing slowly on certain days.
days that are long
Highlights the extended duration of specific days.
certain days of extended duration
Formally specifies certain days and their prolonged length.
some particularly long days
Highlights the exceptional length of some days.
a few long days
Indicates a small number of days that are long.
several days that stretched on
Implies that time passed slowly over several days.
some days of considerable length
Emphasizes the significant duration of some days using more formal language.
some days that seemed endless
Focuses on the feeling of days that never seem to end.
certain protracted days
Highlights specific days that are extended and drawn out.
FAQs
How can I rephrase "some days long" to be grammatically correct?
You can rephrase "some days long" to be grammatically correct by saying "some days are long" or "some days feel long". These alternatives provide clarity and adhere to standard English grammar.
What does "some days long" mean?
The phrase "some days long" is not grammatically correct in standard English. It likely attempts to convey that certain days have a significant duration, but it lacks clarity. Using phrases like "some days are long" is clearer and more precise.
Is it acceptable to use "some days long" in writing?
No, it is generally not acceptable to use "some days long" in formal or professional writing. It is better to use grammatically correct alternatives such as "some days can be long" or "certain days are long" to ensure clarity and professionalism.
Which is correct: "some days long" or "some days are long"?
"Some days are long" is the correct and grammatically sound option. The phrase "some days long" is not standard English and should be avoided in favor of clearer, more grammatically correct alternatives.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested