From 1e9e64d781aedbcf48d1b19f1fdd8f514fcec5ce Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp@gmail.com>
Date: Tue, 12 Sep 2017 20:32:45 -0400
Subject: [PATCH] Fix maximum minute in PNG tIME chunk

---
 ChangeLog    | 3 ++-
 coders/png.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index f62ee6fcd..b1fb00639 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 2017-09-12  7.0.7-3 Glenn Randers-Pehrson <glennrp@image...>
-  * Maximum valid hour is 23, not 24, in the PNG tIME chunk.
+  * Maximum valid hour is 23, not 24, in the PNG tIME chunk,
+    and maximum valid minute is 59, not 60.
 
 2017-09-12  7.0.7-2 Cristy  <quetzlzacatenango@image...>
   * Release ImageMagick version 7.0.7-2, GIT revision 21089:4e46ad9dd:20170912.
diff --git a/coders/png.c b/coders/png.c
index e4c15fbd8..d41bdfb78 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -8198,7 +8198,7 @@ static void write_tIME_chunk(Image *image,png_struct *ping,png_info *info,
     month++;
     year--;
   }
-  if (minute > 60)
+  if (minute > 59)
   {
      hour++;
      minute-=60;
-- 
2.40.0