diff --git a/CHANGELOG.md b/CHANGELOG.md
index f129dd3..b8b5de9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -241,7 +241,7 @@ release due to the compatibility concern raised.
 - The major version was made to fix the broken Serde dependency issues. (#146, #156, #158, #159)
 
   The original intention to technically break the dependency was
-  to faciliate the use of Serde 1.0 at the expense of temporary breakage.
+  to facilitate the use of Serde 1.0 at the expense of temporary breakage.
   Whether this was appropriate or not is quite debatable,
   but it became clear that there are several high-profile crates requiring Serde 0.9
   and it is not feasible to force them to use Serde 1.0 anyway.
diff --git a/src/date.rs b/src/date.rs
index 430263c..1b7923c 100644
--- a/src/date.rs
+++ b/src/date.rs
@@ -55,7 +55,7 @@ impl<Tz: TimeZone> Date<Tz> {
     /// Makes a new `Date` with given *UTC* date and offset.
     /// The local date should be constructed via the `TimeZone` trait.
     //
-    // note: this constructor is purposedly not named to `new` to discourage the direct usage.
+    // note: this constructor is purposely not named to `new` to discourage the direct usage.
     #[inline]
     pub fn from_utc(date: NaiveDate, offset: Tz::Offset) -> Date<Tz> {
         Date { date: date, offset: offset }
diff --git a/src/datetime.rs b/src/datetime.rs
index fe780e6..945f61c 100644
--- a/src/datetime.rs
+++ b/src/datetime.rs
@@ -82,7 +82,7 @@ impl<Tz: TimeZone> DateTime<Tz> {
     /// assert_eq!(Utc.timestamp(61, 0), dt);
     /// ~~~~
     //
-    // note: this constructor is purposedly not named to `new` to discourage the direct usage.
+    // note: this constructor is purposely not named to `new` to discourage the direct usage.
     #[inline]
     pub fn from_utc(datetime: NaiveDateTime, offset: Tz::Offset) -> DateTime<Tz> {
         DateTime { datetime: datetime, offset: offset }
@@ -137,7 +137,7 @@ impl<Tz: TimeZone> DateTime<Tz> {
     /// Note that this does reduce the number of years that can be represented
     /// from ~584 Billion to ~584. (If this is a problem, please file
     /// an issue to let me know what domain needs nanosecond precision over
-    /// millenia, I'm curious.)
+    /// millennia, I'm curious.)
     ///
     /// # Example
     ///
diff --git a/src/naive/date.rs b/src/naive/date.rs
index 42c82bb..f6cdded 100644
--- a/src/naive/date.rs
+++ b/src/naive/date.rs
@@ -411,7 +411,7 @@ impl NaiveDate {
                            Of::new(ordinal, flags))
     }
 
-    /// Makes a new `NaiveDate` by counting the number of occurances of a particular day-of-week
+    /// Makes a new `NaiveDate` by counting the number of occurrences of a particular day-of-week
     /// since the beginning of the given month.  For instance, if you want the 2nd Friday of March
     /// 2017, you would use `NaiveDate::from_weekday_of_month(2017, 3, Weekday::Fri, 2)`.
     ///
@@ -440,7 +440,7 @@ impl NaiveDate {
         NaiveDate::from_weekday_of_month_opt(year, month, weekday, n).expect("out-of-range date")
     }
 
-    /// Makes a new `NaiveDate` by counting the number of occurances of a particular day-of-week
+    /// Makes a new `NaiveDate` by counting the number of occurrences of a particular day-of-week
     /// since the beginning of the given month.  For instance, if you want the 2nd Friday of March
     /// 2017, you would use `NaiveDate::from_weekday_of_month(2017, 3, Weekday::Fri, 2)`.  `n` is 1-indexed.
     ///
diff --git a/src/naive/datetime.rs b/src/naive/datetime.rs
index 24aee97..6989a62 100644
--- a/src/naive/datetime.rs
+++ b/src/naive/datetime.rs
@@ -317,7 +317,7 @@ impl NaiveDateTime {
     /// 2262-04-11T23:47:16.854775804.
     ///
     /// (If this is a problem, please file an issue to let me know what domain
-    /// needs nanosecond precision over millenia, I'm curious.)
+    /// needs nanosecond precision over millennia, I'm curious.)
     ///
     /// # Example
     ///