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
two days preceding
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "two days preceding" is correct and usable in written English.
It can be used to refer to a time period that is two days before a specific event or date. Example: "The meeting will take place on Friday, so please submit your reports by the end of the day on Wednesday, two days preceding the meeting."
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
during the previous years
it is important to remember
not yet completed
to avoid disruption
in accordance with direction from
Over the course of history
a couple of books before
if not soon
in two days
as excellent as
in a flash
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
15 human-written examples
Extension of the time period during which the occurrence of oliguria could predict AKI-Cr from the day preceding to the two days preceding AKI-Cr did not improve the ability of oliguria to discriminate AKI-Cr (Table 4) and the ROCAUC for this comparison was 0.72 (0.72-0.72).
Science
When stratifying for vancomycin-susceptibility, there was no difference in APACHE II scores on the day of infection or the two days preceding infection between the VRE and VSE groups.
Science
Investigated the annual gate-closing ceremony at St. Paul's Chapel, when the passageway between Fulton and Vesey Streets is closed to the public during the two days preceding St . Pauls Eve-gate-closing is more than fifty years old.
News & Media
FoST Fest, which will take place for the first time from Oct. 7 to 9 at the Africa Center, 1280 Fifth Avenue, grew out of the Future of StoryTelling Summit, an invitation-only gathering that is now in its fifth year and is being held on the two days preceding the festival.
News & Media
A MET intervention was defined as delayed when at least one abnormal EWS was documented for one or two days preceding the first MET consult.
Science
Foreshocks in the two days preceding the mainshock occurred in a localized area off Miyagi, and the Mw 9.0 mainshock occurred at the southwestern edge of this fore-shock area.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
In contrast to many other studies where information was collected upon initial review or around the time of initiation of dialysis, data from patients enrolled in PICARD were collected from three days preceding the day of AKI diagnosis throughout their ICU course.
Science
The first follow-up visit to the cohort was done within the three days preceding or following the day the child completed three months of age.
Science
Four stages of participant assessment are planned in this RCT: - initial (T0) and end of treatment (T5w) assessments are performed during the seven days preceding the treatment and on the last day of treatment, respectively.
For example participants will be asked about their exposures for three days preceding their back pain and also on the day of their back pain.
The four days preceding the announcement saw 11 killings, in a country of just 1.3m people.
News & Media
Expert writing Tips
Best practice
When using "two days preceding", ensure the context clearly establishes the event or date being referenced. This avoids ambiguity and ensures clarity in your writing.
Common error
Avoid using "two days preceding" with future tense verbs if the reference point is also in the future. Instead, use "two days before" or rephrase to maintain logical consistency.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "two days preceding" functions as an adverbial phrase modifying a verb or clause by specifying a time frame relative to a particular event. It indicates a period of 48 hours immediately before something occurred or will occur. Ludwig AI confirms its usability.
Frequent in
Science
60%
News & Media
33%
Formal & Business
7%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "two days preceding" is a grammatically sound and frequently used phrase to denote a 48-hour period before a specific event. As Ludwig AI confirms, this phrase is suitable for scientific, news, and formal contexts. The data analysis reveals its prevalence in scientific research and news reporting, with a slightly formal tone making it ideal for precise communication. When writing, clarity is essential; ensure that the event being preceded is clearly defined. Consider "two days before" for a less formal alternative.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
two days before
This alternative uses a simpler, more direct preposition, creating a less formal tone.
two days prior to
This alternative is slightly more formal, substituting "preceding" with "prior to".
two days ahead of
This phrase emphasizes the temporal gap before the event, focusing on anticipation.
in the two days before
This alternative provides a slightly more descriptive structure to the phrase.
leading up to two days before
This phrase emphasizes the time leading to two days before a given event.
two days in advance of
This alternative is more formal, employing "in advance of" instead of "preceding".
the two days leading up to
This phrase accentuates the period of time culminating just before the specified event.
in the 48 hours before
This alternative specifies the time frame in hours, making it more precise.
the 48 hours prior to
Replaces 'days' with the equivalent 'hours' emphasizing a more exact timeframe.
a couple of days before
This makes the phrase less precise by use of the informal phrase 'a couple of'.
FAQs
How can I use "two days preceding" in a sentence?
Use "two days preceding" to indicate a period of 48 hours before a specific event. For example: "The data collected in the "two days preceding" the storm showed a significant increase in barometric pressure."
What are some alternatives to "two days preceding"?
Alternatives include "two days before", "two days prior to", or "48 hours before", depending on the desired level of formality and precision.
Is it correct to say "in the two days preceding"?
Yes, "in the two days preceding" is grammatically correct and provides a slightly more descriptive way to frame the time period. For example, "In the "two days preceding" the event, preparations were finalized."
Which is more formal, "two days preceding" or "two days before"?
"Two days preceding" is generally considered more formal than "two days before". The choice depends on the context and the desired tone of your writing.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested