4272e1c7a2d10741a096eb7868c680bdb11e9895
braney
  Thu Mar 22 11:37:42 2018 -0700
changes in response to code review #21090

diff --git src/hg/js/hgCollection.js src/hg/js/hgCollection.js
index c2d05c2..4f3f48a 100644
--- src/hg/js/hgCollection.js
+++ src/hg/js/hgCollection.js
@@ -530,31 +530,32 @@
         } else {
             var counter = 1;
 
             for(; ; counter++) {
                 var label  = root + ' (' + counter + ')';
                 if (!collectionLabels[label]) {
                     collectionLabels[label] = 1;
                     return label;
                 }
             }
         }
     }
 
     function getUniqueName() {
         // make sure name is unique in track hub
-        var seconds =  Math.floor( Date.now() / 1000 ) - 1520631071;
+        var releaseDateInSeconds = 1520631071;
+        var seconds =  Math.floor( Date.now() / 1000 ) - releaseDateInSeconds;
         var root = "coll" + seconds;
         if (!collectionNames[root]) {
             collectionNames[root] = 1;
             return root;
         } else {
             var counter = 1;
 
             for(; ; counter++) {
                 var name  = root + counter;
                 if (!collectionNames[name]) {
                     collectionNames[name] = 1;
                     return name;
                 }
             }
         }