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On a day vs in a day

On a day vs in a day which is much better to use in a sentence. Which is more popular in English form?

Looking on the internet deeply has found these results:

On a day is the most popular phrase on the web.

in a day

1442,000,000 results on the web

On a day

1444,000,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:

  • We will process around 2,000 meters of cloth in a day.
  • Russia wasn't conquered in a day...
  • The forest wasn't grown in a day.
  • I'll let you know in a day.
  • Hard enough to take one of you in a day.
  • And your coke demand dies in a day.
  • I have to write my first song in a day.
  • Probably in a day or two.
  • On a day like today, you should've driven here.
  • On a day with no wind, rain that falls quietly, softly.
  • On a day like today, 5 years ago.
  • On a day like this, we can feel the truth of those words.
  • On a day like today, it just feels like people should be together.
  • On a day like today, I doubt that's possible.
  • On a day like this... we can smell the sky itself.
  • On a day like this, many years ago, it was my birthday.

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On a day vs in a day | GrammarChecker.io