diff --git a/webapp/src/Twig/TwigExtension.php b/webapp/src/Twig/TwigExtension.php
index 60df1de6cc..4ce1f2ac14 100644
--- a/webapp/src/Twig/TwigExtension.php
+++ b/webapp/src/Twig/TwigExtension.php
@@ -204,14 +204,24 @@ public function printelapsedminutes(float $start, float $end): string
     /**
      * Print a time formatted as specified. The format is according to date().
      * @param Contest|null $contest If given, print time relative to that contest start.
+     * @param bool $maskOutsideContest, When true and contest is given replace time with before/after.
      */
-    public function printtime(string|float|null $datetime, ?string $format = null, ?Contest $contest = null): string
+    public function printtime(string|float|null $datetime, ?string $format = null, ?Contest $contest = null, bool $maskOutsideContest = true): string
     {
         if ($datetime === null) {
             $datetime = Utils::now();
         }
         if ($contest !== null && $this->config->get('show_relative_time')) {
             $relativeTime = $contest->getContestTime((float)$datetime);
+            if ($maskOutsideContest) {
+                if ($relativeTime < 0) {
+                    return "Before contest";
+                }
+                if ($relativeTime > $contest->getContestTime($contest->getEndtime())) {
+                    // The case where it would be exactly at EndTime is important to display
+                    return "After contest";
+                }
+            }
             $sign         = ($relativeTime < 0 ? -1 : 1);
             $relativeTime *= $sign;
             // We're not showing seconds, while the last minute before
diff --git a/webapp/templates/partials/problem_list.html.twig b/webapp/templates/partials/problem_list.html.twig
index b85f2437df..e98ba39797 100644
--- a/webapp/templates/partials/problem_list.html.twig
+++ b/webapp/templates/partials/problem_list.html.twig
@@ -105,7 +105,7 @@
                                                                 data-bs-toggle="tooltip"
                                                                 data-bs-placement="top"
                                                                 data-bs-html="true"
-                                                                title="Between {{ stat.start.timestamp | printtime(null, contest) }} and {{ stat.end.timestamp | printtime(null, contest) }}:<br/>{{ label }}">
+                                                                title="Between {{ stat.start.timestamp | printtime(null, contest, false) }} and {{ stat.end.timestamp | printtime(null, contest, false) }}:<br/>{{ label }}">
                                                             </div>
                                                         {% endfor %}
                                                     </div>