diff --git a/rootdir/init.rc b/rootdir/init.rc
index e6f4f4a..a2b8f59 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -321,6 +321,9 @@
     # Set SELinux security contexts on upgrade or policy update.
     restorecon_recursive /data
 
+    # Check any timezone data in /data is newer than the copy in /system, delete if not.
+    exec u:r:tzdatacheck:s0 system system -- /system/bin/tzdatacheck /system/usr/share/zoneinfo /data/misc/zoneinfo
+
     # If there is no fs-post-data action in the init.<device>.rc file, you
     # must uncomment this line, otherwise encrypted filesystems
     # won't work.