diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4f0e04e..d29085f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 ### Improvements
 - Add the "desc" field (check's description) to API responses
 - Add maxlength attribute to HTML input=text elements
+- Improved logic for displaying job execution times in log (#219)
 
 ### Bug Fixes
 - Fix refreshing of the checks page filtered by tags (#221)
diff --git a/hc/front/templatetags/hc_extras.py b/hc/front/templatetags/hc_extras.py
index c25182f5..78a1010c 100644
--- a/hc/front/templatetags/hc_extras.py
+++ b/hc/front/templatetags/hc_extras.py
@@ -5,7 +5,7 @@ from django.conf import settings
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
 
-from hc.lib.date import format_duration, format_mins_secs
+from hc.lib.date import format_duration, format_hms
 
 register = template.Library()
 
@@ -16,8 +16,8 @@ def hc_duration(td):
 
 
 @register.filter
-def mins_secs(td):
-    return format_mins_secs(td)
+def hms(td):
+    return format_hms(td)
 
 
 @register.simple_tag
diff --git a/hc/front/views.py b/hc/front/views.py
index 4737e6ce..8281d887 100644
--- a/hc/front/views.py
+++ b/hc/front/views.py
@@ -39,6 +39,7 @@ STATUS_TEXT_TMPL = get_template("front/log_status_text.html")
 LAST_PING_TMPL = get_template("front/last_ping_cell.html")
 EVENTS_TMPL = get_template("front/details_events.html")
 ONE_HOUR = td(hours=1)
+TWELVE_HOURS = td(hours=12)
 
 
 def _tags_statuses(checks):
@@ -405,6 +406,10 @@ def remove_check(request, code):
 
 
 def _get_events(check, limit):
+    # max time between start and ping where we will consider
+    # the both events related.
+    max_delta = min(ONE_HOUR + check.grace, TWELVE_HOURS)
+
     pings = Ping.objects.filter(owner=check).order_by("-id")[:limit]
     pings = list(pings)
 
@@ -412,7 +417,7 @@ def _get_events(check, limit):
     for ping in pings:
         if ping.kind == "start" and prev and prev.kind != "start":
             delta = prev.created - ping.created
-            if delta < ONE_HOUR:
+            if delta < max_delta:
                 setattr(prev, "delta", delta)
 
         prev = ping
diff --git a/hc/lib/date.py b/hc/lib/date.py
index 528fbe7b..a358a167 100644
--- a/hc/lib/date.py
+++ b/hc/lib/date.py
@@ -29,12 +29,17 @@ def format_duration(td):
     return " ".join(result)
 
 
-def format_mins_secs(td):
+def format_hms(td):
     total_seconds = int(td.total_seconds())
     result = []
 
     mins, secs = divmod(total_seconds, 60)
-    if mins:
+    h, mins = divmod(mins, 60)
+
+    if h:
+        result.append("%d h" % h)
+
+    if h or mins:
         result.append("%d min" % mins)
 
     result.append("%s sec" % secs)
diff --git a/hc/lib/tests/test_date.py b/hc/lib/tests/test_date.py
index 8bc4827a..26dbe9dd 100644
--- a/hc/lib/tests/test_date.py
+++ b/hc/lib/tests/test_date.py
@@ -1,20 +1,27 @@
 from datetime import timedelta as td
 from django.test import TestCase
 
-from hc.lib.date import format_mins_secs
+from hc.lib.date import format_hms
 
 
 class DateFormattingTestCase(TestCase):
 
     def test_mins_secs_work(self):
-        s = format_mins_secs(td(seconds=0))
+        s = format_hms(td(seconds=0))
         self.assertEqual(s, "0 sec")
 
-        s = format_mins_secs(td(seconds=1))
+        s = format_hms(td(seconds=1))
         self.assertEqual(s, "1 sec")
 
-        s = format_mins_secs(td(seconds=61))
+        s = format_hms(td(seconds=61))
         self.assertEqual(s, "1 min 1 sec")
 
-        s = format_mins_secs(td(seconds=62))
+        s = format_hms(td(seconds=62))
         self.assertEqual(s, "1 min 2 sec")
+
+    def test_hours_work(self):
+        s = format_hms(td(seconds=62 + 60 * 60))
+        self.assertEqual(s, "1 h 1 min 2 sec")
+
+        s = format_hms(td(seconds=60 * 60))
+        self.assertEqual(s, "1 h 0 min 0 sec")
diff --git a/templates/front/details_events.html b/templates/front/details_events.html
index 80da98a1..22f300b4 100644
--- a/templates/front/details_events.html
+++ b/templates/front/details_events.html
@@ -24,7 +24,7 @@
             {% if event.delta %}
             <div class="delta">
                 <span class="icon-timer"></span>
-                {{ event.delta|mins_secs }}
+                {{ event.delta|hms }}
             </div>
             {% endif %}
 
diff --git a/templates/front/log.html b/templates/front/log.html
index c444569b..45807b7a 100644
--- a/templates/front/log.html
+++ b/templates/front/log.html
@@ -58,7 +58,7 @@
                 {% if event.delta %}
                 <div class="delta">
                     <span class="icon-timer"></span>
-                    {{ event.delta|mins_secs }}
+                    {{ event.delta|hms }}
                 </div>
                 {% endif %}