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
As of what date
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "As of what date" is correct and usable in written English.
It is typically used to inquire about the specific date relevant to a situation or context. Example: "As of what date should we consider the new policy to be in effect?"
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Check the date of submission: You need to check as to by what date you have to submit your dissertation and whether or not any flexibility is allowed.
Wiki
Should a claim of view blockage be limited by date, and if so what date?
News & Media
What date?
Academia
Perhaps as much as 95 percent of what was available for that move-in date was listed by then, he said.
News & Media
This can be accomplished by using either a preset rising equity glide path (as an inverse of what today's target date funds do for the pre-retirement period), a valuation-based strategy, or some combination of the two.
News & Media
Document the time and date of the violation, as well as your account of what happened.
Wiki
As of this date, we profoundly do not know what flips and flops 2012 will bring.
News & Media
One of the titan apps of the online dating world is branching out as far as what types of relationships its algorithms will support.
News & Media
And "United 93" is about as good as it gets the most vivid reminder to date of what happened on September 11th.There is nothing sensational about the film.
News & Media
Allowing for some confusion as to what the date of the action should be (you can see the date "1971" crossed out in the first line and "1961" added just before), the moment seems to emerge fully formed.
News & Media
Armenians mark the date 24 April 1915 as the start of what they regard as the genocide.
News & Media
Expert writing Tips
Best practice
Consider your audience and the level of formality required. In more formal settings, a phrase like "what is the effective date?" may be more appropriate.
Common error
Avoid using "as of what date" when seeking a duration or range of dates. This phrase is best suited for identifying a single, specific date.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "as of what date" functions as an interrogative phrase used to inquire about a specific point in time relevant to a particular event, situation, or piece of information. Ludwig confirms its usability.
Frequent in
News & Media
40%
Wiki
20%
Science
15%
Less common in
Academia
10%
Formal & Business
10%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "as of what date" is a grammatically correct and commonly used interrogative phrase for inquiring about a specific date. Ludwig confirms its acceptability and usability. It is versatile, appearing in various contexts such as news, media, and academic writing. While generally neutral, its formality can vary depending on the setting. Alternatives like "what is the effective date?" may be preferred in more formal situations. When using this phrase, clarity of context is crucial to avoid ambiguity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
What is the effective date?
Directly asks for the date when something becomes active or valid; more concise.
By what date should this be completed?
Focuses on the deadline for completion, framing the inquiry around a required action.
Until what date is this valid?
Inquires about the end date of validity, suitable for expiration or temporary status.
What date are we considering?
Asks about the date currently under discussion or evaluation; less formal.
From what date does this apply?
Focuses on the starting date of applicability, similar to 'effective date'.
What is the start date?
Asks specifically for the date something begins, useful in project management or scheduling.
On what date does this commence?
More formal way of asking when something begins, suitable for official contexts.
What date are we targeting?
Inquires about a planned or projected date, commonly used in planning scenarios.
What is the designated date?
Asks for a specific date that has been officially set or assigned for a particular purpose.
What date are you referring to?
Asks for clarification about a previously mentioned date, indicating potential ambiguity.
FAQs
How can I use "as of what date" in a sentence?
You can use "as of what date" to ask for a specific date relevant to a particular situation. For example, "As of what date will the new policy be implemented?" or "As of what date are these figures accurate?"
What are some alternatives to "as of what date"?
Alternatives include "what is the effective date", "by what date", or "from what date", depending on the context.
Is it more formal to say "as of what date" or "what is the effective date"?
"What is the effective date?" is generally considered more formal than "as of what date". "As of what date" is acceptable in many contexts, but the former may be preferred in official or business communications.
What's the difference between "as of what date" and "what date are you referring to"?
"As of what date" seeks to establish a specific date related to a situation, while "what date are you referring to" asks for clarification about a date that has already been mentioned or implied.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested