I understand that if one were to go back in time and ask a participant at the battle of Agincourt what the date was, he would (if he knew) say that it was the 16th of October, he would also (more likely) say that it was — famouslySt Crispin's Day:

This day is call’d the feast of Crispian.
He that outlives this day, and comes safe home,
Will stand a tip-toe when this day is nam’d,
And rouse him at the name of Crispian.

Currently, of course, we celebrate the anniversary of the event today, on the 25th of October — but we also call this day St Crispin's Day.

Did the dates of Saints Days move with the Gregorian calendar reforms? If so was this move done consistently, and at the time of the reforms or later?

1 Answer 1


The answer to your question is no. All fixed festivals remained on the same date, for example Christmas was celebrated on 25 December Julian, and then on 25 December Gregorian. However, the Gregorian reform did affect Easter and the movable feasts dependent on Easter.

  • So when Wikipedia says St Crispin's Day falls on 25 October it is wrong; or was Shakespeare wrong, or at least anachronistic (as was writing after the reforms)?
    – orome
    Oct 25, 2015 at 14:45
  • Where did you find "16 October"?
    – fdb
    Oct 25, 2015 at 14:52
  • 25 October 1415 in the Gregorian calendar is 16 October 1415 the Julian (as can be confirmed here or here).
    – orome
    Oct 25, 2015 at 14:56
  • Before the reform St Crispin's day was celebrated on 25 October Julian. After the reform it was celebrated on 25 October Gregorian. Is that not clear?
    – fdb
    Oct 25, 2015 at 15:08
  • 1
    No, it was on a date which the people of the time called "25 October". A modern historian can recalculate it as "16 October Gregorian" but that has no relevance for the people of the time.
    – fdb
    Oct 25, 2015 at 15:14

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