diff --git a/src/cljs/ulysses/components/basic.cljs b/src/cljs/ulysses/components/basic.cljs
index 0ee2074..31b3364 100644
--- a/src/cljs/ulysses/components/basic.cljs
+++ b/src/cljs/ulysses/components/basic.cljs
@@ -32,7 +32,7 @@
 (defn label
   "bootstrap label"
   [contextual & rest]
-  (let [classes ["label" (str "label-" (name contextual))]
+  (let [classes ["label" (str "label-" (name contextual)) "has-tooltip"]
         cname (string/join "." (into ["span"] classes))]
     (into [(keyword cname)] rest)))
 
@@ -53,6 +53,12 @@
         [:option {:value v} (or n v)])
       options)])
 
+(defn tooltip
+  [text]
+  [:div.tooltip.tooltip-top {:role "tooltip"}
+    [:div.tooltip-arrow]
+    [:div.tooltip-inner text]])
+
 ;; ----------------------------------------------------------------------------
 ;; css transition group
 ;; ----------------------------------------------------------------------------
diff --git a/src/cljs/ulysses/components/misc.cljs b/src/cljs/ulysses/components/misc.cljs
index b3704ec..525f60b 100644
--- a/src/cljs/ulysses/components/misc.cljs
+++ b/src/cljs/ulysses/components/misc.cljs
@@ -1,6 +1,6 @@
 (ns ulysses.components.misc
   (:require [ulysses.utils :refer [mechanism-to-contextual]]
-            [ulysses.components.basic :refer [label]]
+            [ulysses.components.basic :refer [label tooltip]]
             [ulysses.lib.moment :as m]))
 
 ;; ----------------------------------------------------------------------------
@@ -11,7 +11,8 @@
   (when (m/is-valid mi)
     [label :default
       "ends "
-      (-> mi (m/from-now false))]))
+      (-> mi (m/from-now false))
+      [tooltip (-> mi (m/format "L"))]]))
 
 (defn grant-op-fm-label [{:keys [name]}]
   [label (-> name keyword mechanism-to-contextual) name])
diff --git a/src/cljs/ulysses/lib/moment.cljs b/src/cljs/ulysses/lib/moment.cljs
index 6a05810..aeacf13 100644
--- a/src/cljs/ulysses/lib/moment.cljs
+++ b/src/cljs/ulysses/lib/moment.cljs
@@ -12,3 +12,4 @@
 (forward-jsobj-fn to-iso-string toISOString)
 (forward-jsobj-fn add add)
 (forward-jsobj-fn is-valid isValid)
+(forward-jsobj-fn format format)
diff --git a/src/sass/_common.scss b/src/sass/_common.scss
index 0df9fe0..40c6940 100644
--- a/src/sass/_common.scss
+++ b/src/sass/_common.scss
@@ -130,3 +130,20 @@ a.fancy-switch {
     }
   }
 }
+
+.has-tooltip {
+  position: relative;
+
+  .tooltip {
+    display: none;
+    opacity: 0;
+    top: -38px;
+  }
+
+  &:hover {
+    .tooltip {
+      display: block;
+      opacity: 1;
+    }
+  }
+}