diff --git a/src/java/timezones.properties b/src/java/timezones.properties
index d7f0eb7c..cefddf59 100644
--- a/src/java/timezones.properties
+++ b/src/java/timezones.properties
@@ -74,3 +74,6 @@
 (GMT-12.00)\ Eniwetok/Kwajalein/Dateline Time=Pacific/Kwajalein
 GMT\ +0100\ (Standard)\ /\ GMT\ +0200\ (Daylight)=Europe/Paris
 GMT\ +1000\ (Standard)\ /\ GMT\ +1100\ (Daylight)=Australia/Melbourne
+GMT\ -0500\ (Standard)\ /\ GMT\ -0400\ (Daylight)=America/New_York
+GMT\ -0700\ (Standard)\ /\ GMT\ -0600\ (Daylight)=America/Denver
+