diff --git a/docs/d3-time.md b/docs/d3-time.md
index eca0692d..96fbaddf 100644
--- a/docs/d3-time.md
+++ b/docs/d3-time.md
@@ -44,7 +44,7 @@ d3.utcMonday.floor(new Date()) // the latest preceding Monday, UTC time
 
 [Source](https://github.com/d3/d3-time/blob/main/src/interval.js) · Returns a new date representing the latest interval boundary date before or equal to *date*. For example, [d3.timeDay](#timeDay).floor(*date*) typically returns 12:00 AM local time on the given *date*.
 
-This method is idempotent: if the specified *date* is already floored to the current interval, a new date with an identical time is returned. Furthermore, the returned date is the minimum expressible value of the associated interval, such that *interval*.floor(*interval*.floor(*date*) - 1) returns the preceeding interval boundary date.
+This method is idempotent: if the specified *date* is already floored to the current interval, a new date with an identical time is returned. Furthermore, the returned date is the minimum expressible value of the associated interval, such that *interval*.floor(*interval*.floor(*date*) - 1) returns the preceding interval boundary date.
 
 Note that the `==` and `===` operators do not compare by value with [Date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) objects, and thus you cannot use them to tell whether the specified *date* has already been floored. Instead, coerce to a number and then compare: