diff --git a/share/zoneinfo/asia b/share/zoneinfo/asia
index a95a934b56e8..b7aa43a6b555 100644
--- a/share/zoneinfo/asia
+++ b/share/zoneinfo/asia
@@ -1,4 +1,4 @@
-# @(#)asia 8.48
+# @(#)asia 8.50
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
@@ -196,6 +196,41 @@ Zone Asia/Bahrain 3:22:20 - LMT 1920 # Al Manamah
# http://www.thaindian.com/newsportal/business/bangladesh-to-continue-indefinitely-with-advanced-time_100259987.html
#
+# From Alexander Krivenyshev (2009-12-24):
+# According to Bangladesh newspaper "The Daily Star,"
+# Bangladesh will change its clock back to Standard Time on Dec 31, 2009.
+#
+# Clock goes back 1-hr on Dec 31 night.
+#
+# http://www.thedailystar.net/newDesign/news-details.php?nid=119228
+#
+# and
+#
+# http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html
+#
+#
+# "...The government yesterday decided to put the clock back by one hour
+# on December 31 midnight and the new time will continue until March 31,
+# 2010 midnight. The decision came at a cabinet meeting at the Prime
+# Minister's Office last night..."
+
+# From Danvin Ruangchan (2009-12-24):
+# ...the news mentions DST will be turned off again 7 months after March
+# 31st on Oct 31, 2010.
+
+# From Arthur David Olson (2009-12-26):
+# Indeed, "The government will advance again the Banglasdesh Standard
+# Time by one one hour on March 31 next year by enforcing the Daylight
+# Saving Time (DST) for seven months. It will continue till October 31
+# until further notice." I take that last sentence as the
+# establishment of a rule.
+
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Dhaka 2009 only - Jun 29 23:00 1 S
+Rule Dhaka 2010 only - Jan 1 0:00 - -
+Rule Dhaka 2010 max - Mar 31 23:00 1 S
+Rule Dhaka 2010 max - Nov 1 0:00 - -
+
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dhaka 6:01:40 - LMT 1890
5:53:20 - HMT 1941 Oct # Howrah Mean Time?
@@ -203,8 +238,8 @@ Zone Asia/Dhaka 6:01:40 - LMT 1890
5:30 - IST 1942 Sep
6:30 - BURT 1951 Sep 30
6:00 - DACT 1971 Mar 26 # Dacca Time
- 6:00 - BDT 2009 Jun 19 23:00 # Bangladesh Time
- 6:00 1:00 BDST
+ 6:00 - BDT 2009
+ 6:00 Dhaka BD%sT
# Bhutan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]