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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
that january
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that January" is correct and usable in written English.
It can be used to refer to a specific January in a conversation or narrative, often to indicate a time frame or event that occurred during that month. Example: "I remember that January was particularly cold, and we had several snowstorms."
✓ Grammatically correct
News & Media
Alternative expressions(4)
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
59 human-written examples
Knowing that January will end.
News & Media
The rebellion had started that January.
News & Media
Kasowitz held the event that January.
News & Media
Allardyce added: "Everybody knows that January is not positive.
News & Media
He also can't remember what, exactly, he was doing for an hour after school that January.
News & Media
Testimony on Capitol Hill followed that January flight, as did a slew of other public appearances.
News & Media
(Or maybe it indicates that January is a slow month for new releases).
News & Media
There is a feeling that January is not the kind of time to make those signings.
News & Media
The book also challenges the myth that January, 2011, was beautiful and peaceful.
News & Media
Here at the Covers Contest, we resolved that January would be a month of body-purification.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Toyota reported that January-March profit slid to ¥25.4bn (£188m) from ¥112.2bn a year earlier.
News & Media
Expert writing Tips
Best practice
Combine "that January" with specific details to ensure clarity, such as "that January of 2020".
Common error
Avoid using "that January" when introducing January for the first time. Use "in January" instead. "That January" is best when referring to a January already established in the conversation or text.
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
That January acts as a determiner phrase, specifying a particular instance of the month of January. Ludwig AI suggests that it indicates a specific time frame within a narrative or conversation where the reader/listener already knows about the January in question.
Frequent in
News & Media
97%
Wiki
3%
Science
0%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "that January" is grammatically correct and functions as a determiner phrase to specify a particular January within a known context, as supported by Ludwig AI. It commonly appears in news and media sources. When using this phrase, ensure that the specific January is clear to your audience. Consider alternatives such as "the January in question" or specifying the year for added clarity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
the January in question
Replaces "that" with "the in question" to emphasize a specific January previously discussed.
the January mentioned earlier
Specifies January by referring back to a prior mention.
the January we're talking about
Highlights that a specific January is the topic of conversation.
the aforementioned January
Uses a more formal tone to refer to a January previously referenced.
that specific January
Emphasizes the particularity of the January being discussed.
the January of that year
Adds context by linking the January to a specific year.
the January of that period
Adds context by linking the January to a specific period.
the January in those days
Adds context by linking the January to a time in the past.
the January back then
Adds context by referring to the January during a past period.
January of that time
Uses an inverted structure to refer to a specific January.
FAQs
How is "that January" used in a sentence?
Use "that January" to refer to a specific January already known or previously mentioned in the context. For example, "We met in December, and "that January" we started working together."
What are some alternatives to using "that January"?
Depending on the context, you can use phrases like "the January in question", "the aforementioned January", or specify the year, such as "January 2020".
Is it correct to say "in that January"?
While grammatically understandable, "in that January" is less common and sounds awkward. It's better to use ""that January"" or "in January of that year" for clarity and natural flow.
When should I use "that January" versus just "January"?
Use "January" when referring to January in general. Use ""that January"" when referring to a specific January already discussed or understood in the context. For example, "January is usually cold, but "that January" was exceptionally mild".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.1/5
Expert rating
Real-world application tested