diff --git a/mksnap.sh b/mksnap.sh
index a52f3f2e4ac7c2121bc1c256834949fee496cd4d..8011f4644d1157f7672ddb7ec6a39a772c6a8089 100755
--- a/mksnap.sh
+++ b/mksnap.sh
@@ -6,7 +6,7 @@
 MYTMPDIR="${TMPDIR:-/tmp}/alberta2.$$"
 SVNREPOS=svn+ssh://malaga.math.uni-augsburg.de/homes/proj/alberta/ALBERTA_SVN
 ALBERTADIST=trunk/albertadist
-DATE=$(date '+%Y%m%d')
+DATE=$(date --utc '+%Y%m%d')
 SNAPSHOTDIR=/hosts/www/www/htdocs/IAM/homepages/claus/alberta/snapshots
 NSNAPSHOTS=10 # keep only the most recent 10 snapshots