How different are the following two sentences:

I am not allowed to sleep during the day.
I am not allowed to sleep in the day.
  • 1
    The first treats 'day' as a continuum; the second as a discrete unit. Eventually, they mean practically the same. HTH.
    – Kris
    Nov 8, 2014 at 13:53
  • HTH means "Hope that helps." or "Happy to help." Dec 8, 2014 at 16:17

1 Answer 1


Graphically "in" can be represented with a point on a section of a line, standing for a period of time.

"during" belongs to the word family duration (in German there is still the verb dauern). "during" could be represented graphically by a section of a line for time period and a second parallel line covering all of the period of time.

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