According to Cambridge Dictionary,

with a singular day of the week to refer to one occasion:

I’ve got to go to London on Friday.

with a plural day of the week to refer to repeated events:

The office is closed on Fridays. (every Friday) In informal situations, we often leave out on before plural days:

Do you work Saturdays?

I’ve got to go to London on Friday.=I’ve got to go to London this/next Friday.

The office is closed on Fridays.=The office is closed every Friday.

However, I would think that "in July" or "in Winter" can be used for both cases "one occasion" & "repeated events", but I am not so sure.

Example 1:

  • I’ve got to go to London in July.=I’ve got to go to London this July.
  • The office is closed in July.=The office is closed every July.

Example 2:

  • I’ve got to go to London in Winter.=I’ve got to go to London this Winter.
  • The office is closed in Winter.=The office is closed every Winter.

We have "on Monday" for 1 occasion & "on Mondays" for repeated events, can we have similar patterns for "in July" or "in Winter"?

For example, can we say the following?

  • The office is closed in Winters / in Julies.=The office is closed every Winter / every July.
  • See also: english.stackexchange.com/q/37738/50044 – NVZ Mar 26 '17 at 8:31
  • A quick Google search of, for example, Januaries, shows that such a usage exists. For example, "Average returns for various investments in Januaries vs. other months, 1970-2009. Sources: Bloomberg." I would offer a bounty to draw more attention to this question, but these days it seems bounties don't do much. Anyway you can Google the various pluralized months and seasons and make your own discoveries. One thing for sure there is no "rule", as @WS2 purports. – Arm the good guys in America Jun 15 '17 at 12:03
  • Another Google example: "In Januaries past, the McGillivray's, too, had taken delight in the once yearly reprieve from tending to guest." – Arm the good guys in America Jun 15 '17 at 12:10
  • These uses might not be exactly the same as what the OP is asking about, but the question deserves more attention. As does the use of "we're closed summers", noted by @fixer1234,who has classified it as odd. Nevertheless it's not ungrammatical, and closed summers, et al . are used with great frequency in travel guides, etc. – Arm the good guys in America Jun 15 '17 at 12:19

The rules work rather differently for months and seasons.


The golf course is closed in/during January could mean every January or just the next forthcoming January. To be absolutely clear one would need to say either ...is closed every January/is always closed in/during January; or ...is closed this/next January.


The golf course is closed in/during winter means every winter. The golf course is closed this/next winter - means only this year.

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  • 1
    Can you refer a reference source for your answer? – Tom Mar 26 '17 at 12:32
  • I think you need to edit your answer a bit because simple present tense can only be used to say repeated things. So, say "it will be closed this/next January" or "it is being closed this/next January" – Tom Mar 26 '17 at 12:40
  • @Tom Seven decades as a native speaker is the only reference I can offer, I'm afraid. I believe the preposition is independent of tense. – WS2 Mar 26 '17 at 18:13
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    I've seen usage like "we're closed summers", although it seems odd. One problem with months is that so many end in "y". Is there even a rule for pluralizing them (Januaries)? – fixer1234 Mar 26 '17 at 21:40
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    @fixer1234 I think We're closed summers is possibly American. One seldom sees it expressed that way in Britain. And I have never seen We are closed Januaries. Personally I would say We are closed in/during January (every year); or We are closed in/during winter. The last would mean all winters. If you wanted to restrict the meaning to the current winter only, it would be necessary to say We are closed this winter, or We are closed for the winter. – WS2 Mar 26 '17 at 21:46

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