diff --git a/mozilla/calendar/locales/en-US/chrome/calendar/calendar.properties b/mozilla/calendar/locales/en-US/chrome/calendar/calendar.properties
index 5c39eb169b6..f2c2e3f6ecf 100644
--- a/mozilla/calendar/locales/en-US/chrome/calendar/calendar.properties
+++ b/mozilla/calendar/locales/en-US/chrome/calendar/calendar.properties
@@ -169,6 +169,32 @@ filterCsv=Comma Separated
 filterOutlookCsv=Outlook Comma Separated
 filterRdf=iCalendar RDF
 
+# Literal Outlook CSV headers.  Take from a .csv file exported by Outlook.
+# For matching first line of .csv file to import Outlook Comma Separated events.
+outlookCSVTitle      =Subject
+outlookCSVStartDate  =Start Date
+outlookCSVStartTime  =Start Time
+outlookCSVEndDate    =End Date
+outlookCSVEndTime    =End Time
+outlookCSVAllDayEvent=All day event
+outlookCSVAlarm      =Reminder on/off
+outlookCSVAlarmDate  =Reminder Date
+outlookCSVAlarmTime  =Reminder Time
+outlookCSVCategories =Categories
+outlookCSVDescription=Description
+outlookCSVLocation   =Location
+outlookCSVPrivate    =Private
+# Literal values for True and False in .csv files exported by Outlook
+outlookCSVValueTrue  =True
+outlookCSVValueFalse =False
+
+# Questions to user about how to parse values
+outlookCSVDateParseConfirm=\
+  A date in this file is formatted as "%1$S".\n\
+  The operating system is set to parse this date as "%2$S".\n\
+  Is this OK?\n\
+  (If not, adjust settings so format matches, then restart this application.)
+
 # Remote calendar errors
 errorTitle=Error getting calendar
 httpError=Getting the calendar file failed.\nStatus code: %1$S: %2$S