diff --git a/git-remote-hg b/git-remote-hg
index 859eed6..a4689ed 100755
--- a/git-remote-hg
+++ b/git-remote-hg
@@ -72,12 +72,14 @@ def gitmode(flags):
     return 'l' in flags and '120000' or 'x' in flags and '100755' or '100644'
 
 def gittz(tz):
-    return '%+03d%02d' % (-tz / 3600, -tz % 3600 / 60)
+    sign = 1 if tz < 0 else -1
+    return '%+03d%02d' % (sign * (abs(tz) / 3600), abs(tz) % 3600 / 60)
 
 def hgtz(tz):
     tz = int(tz)
-    tz = ((tz / 100) * 3600) + ((tz % 100) * 60)
-    return -tz
+    sign = 1 if tz < 0 else -1
+    tz = ((abs(tz) / 100) * 3600) + ((abs(tz) % 100) * 60)
+    return sign * tz
 
 def hgmode(mode):
     m = { '100755': 'x', '120000': 'l' }
diff --git a/test/bidi.t b/test/bidi.t
index 1c41fea..9bc9821 100755
--- a/test/bidi.t
+++ b/test/bidi.t
@@ -240,7 +240,7 @@ test_expect_success 'hg tags' '
 	test_cmp expected actual
 '
 
-test_expect_failure 'test timezones' '
+test_expect_success 'test timezones' '
 	test_when_finished "rm -rf gitrepo* hgrepo*" &&
 
 	(
diff --git a/test/main.t b/test/main.t
index 3af4fce..d51021c 100755
--- a/test/main.t
+++ b/test/main.t
@@ -1052,7 +1052,7 @@ test_expect_success 'push annotated tag' '
 	test_cmp expected actual
 '
 
-test_expect_failure 'timezone issues with negative offsets' '
+test_expect_success 'timezone issues with negative offsets' '
 	test_when_finished "rm -rf hgrepo gitrepo1 gitrepo2" &&
 
 	hg init hgrepo &&