diff -r 000000000000 -r fb9019fb1bf7 src/zoneinfo/America/Guyana.ics
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/zoneinfo/America/Guyana.ics	Tue Feb 10 18:12:00 2015 +0100
@@ -0,0 +1,37 @@
+BEGIN:VCALENDAR
+PRODID:-//tzurl.org//NONSGML Olson 2011n//EN
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:America/Guyana
+TZURL:http://tzurl.org/zoneinfo/America/Guyana
+X-LIC-LOCATION:America/Guyana
+BEGIN:STANDARD
+TZOFFSETFROM:-035240
+TZOFFSETTO:-0345
+TZNAME:GBGT
+DTSTART:19150301T000000
+RDATE:19150301T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0345
+TZOFFSETTO:-0345
+TZNAME:GYT
+DTSTART:19660526T000000
+RDATE:19660526T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0345
+TZOFFSETTO:-0300
+TZNAME:GYT
+DTSTART:19750731T000000
+RDATE:19750731T000000
+END:STANDARD
+BEGIN:STANDARD
+TZOFFSETFROM:-0300
+TZOFFSETTO:-0400
+TZNAME:GYT
+DTSTART:19910101T000000
+RDATE:19910101T000000
+END:STANDARD
+END:VTIMEZONE
+END:VCALENDAR