The opening gives two dates for the same battle: 8 October 1652 under the Gregorian calendar and 28 September under the Julian calendar. England still recorded dates in the Julian system, while the Netherlands used the Gregorian system, a distinction explained again near the end. The ten-day difference reflects parallel dating conventions rather than disagreement about when the action occurred. The point is a useful source-reading caution when comparing English and Dutch accounts of the First Anglo-Dutch War.
Notable Point · 0:20-0:34
Why Kentish Knock has two calendar dates
The battle is dated 8 October 1652 in the Gregorian calendar and 28 September 1652 in the Julian calendar, explaining why English and Dutch records can appear ten days apart.