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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

as at day

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "as at day" is not correct and does not convey a clear meaning in written English.
It seems to be an attempt to refer to a specific point in time, but it is not a standard expression. Example: "The report is accurate as at day of publication."

⚠ May contain grammatical issues

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

15 human-written examples

Sequential Organ Failure Assessment (SOFA) score was calculated on the day of diagnosis of VAP, as well as at day -2 and two days after (day +2) diagnosis of VAP.

The walk-to-run transition occurred at a velocity of 7.7 ± 0.5 km h−1 at day 1 as well as at day 2. Besides, the predicted walk-to-run transition stride frequencies were 69.7 ± 3.3 strides min−1 and 70.5 ± 3.4 strides min−1 on day 1 and day 2, respectively (p = 0.08).

In the graph, the degradation rates at day 0 as well as at day 21 should start at the x-axis, and they should refer as a reference value to the amount of TOC added at that time point.

In dairy and beef cows, PAG concentrations can be detected as early as at Day 21 after AI [ 39].

UTF1+ cells were significantly increased in the testis as early as at day 10 in the Pten−/− males compared with wild-type males (Fig.  4d).

Noticeable, in cases the wound dressing changes occurred more often on the day of surgery, as well as at day one and day two postoperative.

Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

45 human-written examples

I prefer it when its spirituals are sung live, as at Wednesday's opening-night gala at City Center, but performances on Thursday and Friday, when taped music was used, won even more hollers from the crowd.

Bacterial suspensions were stored at 4°C and used as an inoculum at the day of preparation.

The predictive value of response at week 3 was shown to be nearly as good at day 4 as at week 1.

But just as at Sunday brunch, things became sloppier as the alcohol began to take hold.

News & Media

The New York Times

Seve's memory will be celebrated with the appearance of his youngest son in the tournament proper, as well as at Tuesday's special event.

Show more...

Expert writing Tips

Best practice

Replace "as at day" with more common and grammatically sound alternatives like "as of today" or "on this day" for clarity and correctness.

Common error

Avoid using "as at day" when referring to a specific point in time. This phrasing is non-standard and can confuse readers. Instead, use established expressions like "as of" or "on".

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

79%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "as at day" functions as a prepositional phrase attempting to specify a point in time. However, as Ludwig AI points out, this is not a standard or grammatically correct expression in English.

Expression frequency: Uncommon

Frequent in

Science

75%

News & Media

20%

Formal & Business

5%

Less common in

Academia

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "as at day" is an uncommon and grammatically incorrect attempt to specify a point in time. As Ludwig AI confirms, this expression is non-standard. While it appears mainly in scientific contexts, better alternatives like "as of today" or "on this day" are available. It's crucial to use clearer and more grammatically correct phrasing to ensure effective communication. Despite some occurrences in sources like The New York Times and scientific publications, adopting alternatives enhances clarity and credibility.

FAQs

How can I use "as of" instead of "as at day"?

Instead of saying "the data is accurate as at day 15", you can say "the data is accurate "as of" day 15" or "the data is accurate as of the 15th".

What is a grammatically correct alternative to "as at day"?

A grammatically correct alternative includes phrases such as "as of today", "as of the date", or "on this day" depending on the intended meaning and context.

Is "as at day" considered proper English?

No, "as at day" is not considered proper English. It's better to use "as of" followed by the specific date or time for clarity and correctness.

How does the meaning change if I use "as of" instead of "as at day"?

Using "as of" provides a clear and standard way to indicate the point in time when something is accurate or valid. Replacing "as at day" with "as of today" ensures that the sentence is grammatically correct and easily understood.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

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.

Source & Trust

79%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: