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
which is dated
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which is dated" is correct and usable in written English.
It can be used to refer to something that has a specific date associated with it, often in contexts like documents, letters, or historical references. Example: "The letter, which is dated March 5, 2020, provides important information about the project."
✓ Grammatically correct
News & Media
Encyclopedias
Academia
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
60 human-written examples
They found no records of the landscape, which is dated to 1879.
News & Media
The memo, which is dated Aug. 1, 2002, was a seminal legal document guiding the government's thinking on interrogation.
News & Media
Also extant is the gilt-bronze Shaka Triad of Hōryū Temple, which is dated by inscription to 623.
Encyclopedias
There is also a record of the assignment of slips to members which is dated March 15 , 1837
Academia
"We're taking a city that was completely dysfunctional and making it fully functional," Mr. Orson said of the final debt-adjustment plan, which is dated July 27.
News & Media
The author of the memo, which is dated August 1 , 2002 is Jay S. Bybee, who was the Assistant Attorney General for the Office of Legal Counsel.
News & Media
In the middle of the sunken plaza is the so-called Temple of Quetzalcóatl, which is dated to the second phase of Teotihuacán, Miccaotli.
Encyclopedias
Mr. Muhammad's lawyer, Claiborne Ferguson, said his client had not discussed changing his plea to guilty before he wrote the letter, which is dated Jan . 12
News & Media
In the letter, which is dated Sept. 13, Bornstein states that Trump has been under his care since 1980, and sits for an annual physical exam.
News & Media
The membership register includes an undated alphabetical list of members with two revisions for each respective letter, one of which is dated 1868.
Academia
"The forces of evil have descended on our pretty island to sweep us all away to hell," reads the letter, which is dated Feb. 5.
News & Media
Expert writing Tips
Best practice
When using "which is dated", ensure that the date you are referencing is clearly relevant to the context of your sentence. This helps avoid ambiguity and ensures that the temporal reference adds meaningful information.
Common error
Avoid using "which is dated" to refer to future events or time periods. This phrase indicates that the dating has already occurred, and the date is already known.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "which is dated" is to act as a non-restrictive relative clause, providing additional, non-essential information about the noun it modifies. As Ludwig AI confirms, this phrase is grammatically correct and usable. For example, "The memo, which is dated Aug. 1, 2002, was a seminal legal document."
Frequent in
News & Media
45%
Academia
25%
Encyclopedias
15%
Less common in
Science
7%
Wiki
3%
Formal & Business
5%
Ludwig's WRAP-UP
In summary, the phrase "which is dated" functions as a non-restrictive relative clause used to provide the date or time period associated with a noun. As confirmed by Ludwig AI, the phrase is grammatically correct and very common, appearing frequently in contexts such as news, academic writing, and encyclopedias. While its register is generally neutral to formal, it can be used in a variety of settings to add temporal context and precision. When employing this phrase, ensure the date's relevance and avoid using it for future events. Consider alternatives like "that dates back to" or "that originates from" for nuanced expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that dates back to
Emphasizes origin, focusing on when something began; similar to specifying a period of creation or discovery.
that originates from
Focuses on the source or beginning point, implying a starting time.
that was created in
Specifies a particular year or period of production; suitable for objects or documents.
that belongs to the era of
Connects an item or event to a broad historical period, emphasizing its place in time.
that is from the time of
Highlights a connection to a specific period or event, suggesting contemporaneity.
that existed during
Indicates co-existence with a particular period or event, focusing on duration.
that is set in
Implies a specific historical backdrop, often used in narrative contexts.
that has its roots in
Suggests a deeper, more fundamental connection to a time or origin.
that can be traced to
Emphasizes historical tracking or discovery of origins.
that harks back to
Draws a parallel to a past era, usually with nostalgic or reminiscent undertones.
FAQs
How to use "which is dated" in a sentence?
Use "which is dated" to provide the date of something, such as "The document, which is dated July 16, contains the agreement".
What can I say instead of "which is dated"?
You can use alternatives like "that dates back to", "that originates from", or "that was created in" depending on the context.
Which is correct, "which is dated January" or "that is dated January"?
Both "which is dated January" and "that is dated January" are grammatically correct, but "which" is typically used in nonrestrictive clauses, providing additional information, whereas "that" is used in restrictive clauses, essential to the sentence's meaning.
What’s the difference between "which is dated" and "when it was dated"?
"Which is dated" is a nonrestrictive relative clause that provides extra information about the subject, while "when it was dated" introduces a clause specifying the time of dating as essential information. For example: "The letter, which is dated yesterday, confirms the details".
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
4.5/5
Expert rating
Real-world application tested