Possible Duplicate: Is “in ” various from “within ”?

The title says it all: once an author says "within 7 days", walk the writer mean incorporate the 7th day? Or, walk it median up to however not including the 7th day?



I think within seven days includes the seventh day. Ns take that to average "by the finish of the seventh day."

For example, the American Red overcome blood donation website has this line:

• Donated platelets have to be offered within 5 days that collection.

You are watching: What does within 7 days mean

I take that to average the platelets have the right to be offered on work 1, 2, 3, 4, and 5. But on work 6, they have to be discarded.

(The truth that you were motivated to ask your question, however, is why I constantly state specifically that I want something returned to me by the finish of the company day ~ above a details date.)


Whenever I have actually a question favor this I shot to rest it down right into a smaller sized case and then extrapolate. If i ask to have actually something down "within a day" I median 24 hrs from now - today is work 0 and tomorrow is work 1, the day that it is due. For this reason "within 7 days" way it is early on day 7, counting this particular day as job 0.


I believe the answer is that simple language is just not an exact enough come say, there is no a small extra acrobatics. You could ask the very same question around other time limits, such together "by Friday" - go this average that you have until midnight ~ above Friday? ns think over there is a tendency (here"s the acrobatics) to use the next smaller unit as soon as precision is necessary, for instance "48 hours". So, if you want to specify exactly one week, you can say "168 hours".


It"s ambiguous. I"d speak "within 7 days" SHOULD mean within 7 x 24 hrs from now, so if at noon top top Monday I"m called "this is due in ~ 7 days" that would average by noon of the complying with Monday. But people frequently take this particular day to it is in the first day of the count, so if on Monday someone claims "within 3 days" they space thinking job 1=today, Monday; work 2=Tuesday, job 3=Wednesday.

There"s additionally the perennial inquiry of whether the critical day end on the lot of of 24 hrs from the time when the deadline to be given, if it means midnight of that day, or close up door time of the day, or what.

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And does "7 days" typical 7 calendar days, or 7 business days?


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