diff --git a/cara/apps/calculator/templates/calculator.form.html.j2 b/cara/apps/calculator/templates/calculator.form.html.j2
index fcfea05e..e8c938e8 100644
--- a/cara/apps/calculator/templates/calculator.form.html.j2
+++ b/cara/apps/calculator/templates/calculator.form.html.j2
@@ -222,10 +222,10 @@ v{{ calculator_version }} <span style="float:right; font-weight:bold">Please sen
       <option value="training">Training</option>
       <option value="gym">Gym</option>
     </select><br>
-    Exposed person(s) presence: <br>
+    Exposed person(s) presence: (time in UTC)<br>
     <span class="tabbed">Start: </span><input type="time" id="exposed_start" class="start_time" data-time-group="exposed" data-lunch-break="exposed_lunch" name="exposed_start" value="08:30" required> &nbsp;&nbsp;
     Finish: <input type="time" id="exposed_finish" class="finish_time" data-time-group="exposed" data-lunch-break="exposed_lunch" name="exposed_finish" value="17:30" required><br>
-    Infected person(s) presence: <br>
+    Infected person(s) presence: (time in UTC)<br>
     <span class="tabbed">Start: </span><input type="time" id="infected_start" class="start_time" data-time-group="infected" data-lunch-break="infected_lunch" name="infected_start" value="08:30" required> &nbsp;&nbsp;
     Finish: <input type="time" id="infected_finish" class="finish_time" data-time-group="infected" data-lunch-break="infected_lunch" name="infected_finish" value="17:30" required><br>
     <hr width="80%">
@@ -264,7 +264,7 @@ v{{ calculator_version }} <span style="float:right; font-weight:bold">Please sen
         <input type="radio" id="exposed_lunch_option_no" data-lunch-select="exposed" name="exposed_lunch_option" value=0 onclick="require_fields(this)">
           <label for="exposed_lunch_option_no">No</label>&nbsp;&nbsp;
         <input type="radio" id="exposed_lunch_option_yes" data-lunch-select="exposed" name="exposed_lunch_option" value=1 checked="checked" onclick="require_fields(this)">
-          <label for="exposed_lunch_option_yes">Yes</label><br>
+          <label for="exposed_lunch_option_yes">Yes</label><br> (Times in UTC)
 
         Start: <input type="time" id="exposed_lunch_start" class="start_time" data-time-group="exposed_lunch" data-lunch-for="exposed" data-has-radio="#exposed_lunch_option_yes" name="exposed_lunch_start" value="12:30" required> &nbsp;&nbsp;
         Finish: <input type="time" id="exposed_lunch_finish" class="finish_time" data-time-group="exposed_lunch" data-lunch-for="exposed" data-has-radio="#exposed_lunch_option_yes" name="exposed_lunch_finish" value="13:30" required><br>