diff --git a/lib/time_ext/time.rb b/lib/time_ext/time.rb
index 629895b..318732a 100644
--- a/lib/time_ext/time.rb
+++ b/lib/time_ext/time.rb
@@ -1,21 +1,23 @@
 class Time
   
+  # Helper method for backwards compatibility with ActiveSupport.
   def days_into_week
     defined?(DAYS_INTO_WEEK) ? DAYS_INTO_WEEK : { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6 }
   end
   
+  # Helper method for backwards compatibility with ActiveSupport.
   def common_year_days_in_month
     defined?(COMMON_YEAR_DAYS_IN_MONTH) ? COMMON_YEAR_DAYS_IN_MONTH : [nil, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
   end
   
-  # Returns a new Time representing the start of the unit specified (second by default)
+  # Returns a new Time representing the start of the unit specified (second by default).
   def floor(unit = :sec)
     self.send("beginning_of_#{unit}")
   end
   alias :beginning_of :floor
   alias :at_beginning_of :floor
   
-  # Returns a new Time representing the start of the next unit specified (second by default)
+  # Returns a new Time representing the start of the next unit specified (second by default).
   def ceil(unit = :sec)
     self.send("next_#{unit}").send("beginning_of_#{unit}")
   end
@@ -29,46 +31,46 @@ class Time
   end
   alias :beginning_of_closest :round
   
-  # Short-hand for seconds_ago(1)
+  # Short-hand for seconds_ago(1).
   def prev_second
     ago(1)
   end
   alias :prev_sec :prev_second
   
-  # Short-hand for seconds_since(1)
+  # Short-hand for seconds_since(1).
   def next_second
     since(1)
   end
   alias :next_sec :next_second
   
-  # Short-hand for minutes_ago(1)
+  # Short-hand for minutes_ago(1).
   def prev_minute
     minutes_ago(1)
   end
   alias :prev_min :prev_minute
   
-  # Short-hand for minutes_since(1)
+  # Short-hand for minutes_since(1).
   def next_minute
     minutes_since(1)
   end
   alias :next_min :next_minute
   
-  # Short-hand for hours_ago(1)
+  # Short-hand for hours_ago(1).
   def prev_hour
     hours_ago(1)
   end
   
-  # Short-hand for hours_since(1)
+  # Short-hand for hours_since(1).
   def next_hour
     hours_since(1)
   end
   
-  # Short-hand for days_ago(1)
+  # Short-hand for days_ago(1).
   def prev_day
     days_ago(1)
   end
   
-  # Short-hand for days_since(1)
+  # Short-hand for days_since(1).
   def next_day
     days_since(1)
   end
@@ -78,75 +80,75 @@ class Time
     weeks_ago(1).beginning_of_week.since(days_into_week[day].day).change(:hour => 0)
   end
   
-  # Short-hand for quarters_since(1).beginning_of_quarter
+  # Short-hand for quarters_since(1).beginning_of_quarter.
   def next_quarter
     quarters_since(1).beginning_of_quarter
   end
   
-  # Short-hand for quarters_ago(1).beginning_of_quarter
+  # Short-hand for quarters_ago(1).beginning_of_quarter.
   def prev_quarter
     quarters_ago(1).beginning_of_quarter
   end
   
-  # Aliases to keep available method names to a standard pattern
+  # Aliases to keep available method names to a standard pattern.
   alias :secs_ago :ago
   alias :seconds_ago :ago
   alias :secs_since :since
   alias :seconds_since :since
   
-  # Returns a new Time representing the time a number of specified minutes ago
+  # Returns a new Time representing the time a number of specified minutes ago.
   def minutes_ago(minutes)
     ago(minutes.minutes)
   end
   alias :mins_ago :minutes_ago
   
-  # Returns a new Time representing the time a number of specified minutes in the future
+  # Returns a new Time representing the time a number of specified minutes in the future.
   def minutes_since(minutes)
     since(minutes.minutes)
   end
   alias :mins_since :minutes_since
   
-  # Returns a new Time representing the time a number of specified hours ago
+  # Returns a new Time representing the time a number of specified hours ago.
   def hours_ago(hours)
     ago(hours.hours)
   end
   
-  # Returns a new Time representing the time a number of specified hours in the future
+  # Returns a new Time representing the time a number of specified hours in the future.
   def hours_since(hours)
     since(hours.hours)
   end
   
-  # Returns a new Time representing the time a number of specified days ago
+  # Returns a new Time representing the time a number of specified days ago.
   def days_ago(days)
     ago(days.days)
   end
   
-  # Returns a new Time representing the time a number of specified days in the future
+  # Returns a new Time representing the time a number of specified days in the future.
   def days_since(days)
     since(days.days)
   end
   
-  # Returns a new Time representing the time a number of specified weeks ago
+  # Returns a new Time representing the time a number of specified weeks ago.
   def weeks_ago(weeks)
     ago(weeks.weeks)
   end
   
-  # Returns a new Time representing the time a number of specified weeks in the future
+  # Returns a new Time representing the time a number of specified weeks in the future.
   def weeks_since(weeks)
     since(weeks.weeks)
   end
   
-  # Returns a new Time representing the time a number of specified quarters (3 months) ago
+  # Returns a new Time representing the time a number of specified quarters (3 months) ago.
   def quarters_ago(quarters)
     ago((quarters * 3).months)
   end
   
-  # Returns a new Time representing the time a number of specified quarters (3 months) in the future
+  # Returns a new Time representing the time a number of specified quarters (3 months) in the future.
   def quarters_since(quarters)
     since((quarters * 3).months)
   end
   
-  # Returns a new Time representing the start of the second, XX:XX:XX.000000 (.000000000 in ruby1.9)
+  # Returns a new Time representing the start of the second, XX:XX:XX.000000 (.000000000 in ruby1.9).
   def beginning_of_second
     change(:usec => 0)
   end
@@ -154,13 +156,13 @@ class Time
   alias :at_beginning_of_sec :beginning_of_second
   alias :at_beginning_of_second :beginning_of_second
   
-  # Returns a new Time representing the end of the hour, XX:XX:XX.999999 (.999999999 in ruby1.9)
+  # Returns a new Time representing the end of the hour, XX:XX:XX.999999 (.999999999 in ruby1.9).
   def end_of_second
     change(:usec => 999999.999)
   end
   alias :end_of_sec :end_of_second
   
-  # Returns a new Time representing the start of the minute (XX:XX:00)
+  # Returns a new Time representing the start of the minute (XX:XX:00).
   def beginning_of_minute
     change(:sec => 0, :usec => 0)
   end
@@ -168,19 +170,19 @@ class Time
   alias :at_beginning_of_min :beginning_of_minute
   alias :at_beginning_of_minute :beginning_of_minute
   
-  # Returns a new Time representing the end of the hour, XX:XX:59.999999 (.999999999 in ruby1.9)
+  # Returns a new Time representing the end of the hour, XX:XX:59.999999 (.999999999 in ruby1.9).
   def end_of_minute
     change(:sec => 59, :usec => 999999.999)
   end
   alias :end_of_min :end_of_minute
   
-  # Returns a new Time representing the start of the hour (XX:00:00)
+  # Returns a new Time representing the start of the hour (XX:00:00).
   def beginning_of_hour
     change(:min => 0, :sec => 0, :usec => 0)
   end
   alias :at_beginning_of_hour :beginning_of_hour
   
-  # Returns a new Time representing the end of the hour, XX:59:59.999999 (.999999999 in ruby1.9)
+  # Returns a new Time representing the end of the hour, XX:59:59.999999 (.999999999 in ruby1.9).
   def end_of_hour
     change(:min => 59, :sec => 59, :usec => 999999.999)
   end