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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
upon that occasion
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "upon that occasion" is correct and usable in written English.
It can be used to refer to a specific event or instance in the past when discussing something that happened at that time. Example: "Upon that occasion, we celebrated our achievements with a grand party."
✓ Grammatically correct
News & Media
Academia
Science
Wiki
Alternative expressions(20)
at that time
during that event
in that instance
when that happened
at the time
then
on that occasion
at that moment
following that event
as a result of that
in light of that
in my question
in my moment
in the heat of the moment
in my circumstance
for a second
as it happened
during my time
then and there
on one occasion
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
Her warning was invaluable to the troops, and in an 1827 letter, FitzGibbon wrote: "I have ever since held myself personally indebted to her for her conduct upon that occasion".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
This assessment was refuted by Captain Hotham, who publicly responded that "the advanced season of the year and the close proximity of the enemy's coast all made what, upon another occasion, might have appeared haste imperatively necessary, for it was the prompt decision of the Admiral that occasioned the result".
Wiki
"I submit that literature is made upon any occasion that a challenge is put to the legal apparatus by conscience in touch with humanity.
News & Media
The Bell doth toll for him that thinkes it doth; and though it intermit againe, yet from that minute, that that occasion wrought upon him hee is united to God...
News & Media
It's helpful if the pursuit of that bliss involves a white-hot controversy that upon occasion dominates headlines and ensnares academics, government officials and medical researchers.
News & Media
And upon this occasion it was that he set up a brass statue of Minerva, surnamed Health, in the citadel near the altar, which they say was there before.
Upon the occasion of that survey, or shortly thereafter, employees of the company, under the direction of its engineer, removed several hundred yards of material, graded several hundred feet at the upper outlet of the ca non, and put up a retaining wall ten to fifteen feet high, and about one hundred yards in length.
Academia
not met because the laws were found arbitrary in their operation and effect.39 But there can be no doubt that upon proper occasion and by appropriate measures the state may regulate a business in any of its aspects, including the prices to be charged for the products or commodities it sells.
Academia
Heidegger says explicitly in the essay that the essence of technology he is trying to articulate is not the instrumental use of a piece of technology in the sense of goals that might be different depending upon the occasion.
Wouldn't it be nice if here, upon the occasion of the varied and textured shortlist that marks the 2012 prize, we thought about what the short story could do - rather than simply reiterate what it's always done?
News & Media
And it is told, also, that at Athens they erected the altar of Peace upon this occasion, and decreed particular honours to Callias, who was employed as ambassador to procure the treaty.
Expert writing Tips
Best practice
Consider the context. While grammatically correct, "upon that occasion" might sound overly formal in casual conversation. Choose simpler alternatives like "on that occasion" or "at that time" for everyday use.
Common error
Avoid using "upon that occasion" in informal settings or when communicating with a general audience. The formality may sound unnatural or pretentious. Instead, opt for more accessible phrases like "at that time" or "during that event."
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "upon that occasion" primarily functions as an adverbial phrase, modifying a verb or clause by specifying the time or circumstance of an action or event. Ludwig confirms its usability in written English, providing examples of its use in different contexts.
Frequent in
News & Media
32%
Academia
32%
Encyclopedias
11%
Less common in
Science
8%
Wiki
8%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "upon that occasion" is a grammatically sound and usable expression, primarily functioning as an adverbial phrase to provide temporal context. Ludwig AI indicates that its formality makes it more suited for formal writing, academic papers, and official reports rather than casual conversation. While "on that occasion" serves as a more common and less formal alternative, "upon that occasion" can add a touch of sophistication when used appropriately. However, bear in mind it is important to consider the audience to avoid using an overly formal tone.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
on that occasion
Replaces 'upon' with 'on', a more common and slightly less formal preposition.
at that time
Simplifies the phrase to a more direct indicator of time.
during that event
Specifies 'occasion' as an 'event', providing a clearer context.
in that instance
Substitutes 'occasion' with 'instance', focusing on a particular occurrence.
when that happened
Expresses the phrase as a subordinate clause, emphasizing the timing.
at that moment
Focuses on a specific point in time, making the phrase more immediate.
following that event
Indicates a sequence of events, with the original occasion as a reference point.
as a result of that
Highlights the consequential aspect of the occasion.
because of that event
Emphasizes the causal relationship linked to the occasion.
in light of that
Suggests a decision or action taken based on the information available at the time.
FAQs
What does "upon that occasion" mean?
The phrase "upon that occasion" means 'at that particular time' or 'during that event'. It is used to refer back to a specific event or moment that has already been mentioned or is understood in the context.
Is it better to use "upon that occasion" or "on that occasion"?
Both phrases are grammatically correct and have similar meanings. "On that occasion" is more common and less formal than "upon that occasion". The choice depends on the desired tone and context.
What are some synonyms for "upon that occasion"?
Some synonyms for "upon that occasion" include "at that time", "during that event", "in that instance", and "when that happened".
Can I use "upon that occasion" in everyday conversation?
While grammatically correct, "upon that occasion" is quite formal and might sound out of place in casual conversation. Simpler alternatives like "at the time" or "then" are usually more appropriate.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested