diff --git a/cara/apps/calculator/templates/calculator.form.html.j2 b/cara/apps/calculator/templates/calculator.form.html.j2
index e8c938e8..518950b3 100644
--- a/cara/apps/calculator/templates/calculator.form.html.j2
+++ b/cara/apps/calculator/templates/calculator.form.html.j2
@@ -298,7 +298,7 @@ v{{ calculator_version }} <span style="float:right; font-weight:bold">Please sen
         <input type="radio" id="infected_lunch_option_no" data-lunch-select="infected" name="infected_lunch_option" value=0 onclick="require_fields(this)">
           <label for="infected_lunch_option_no">No</label>&nbsp;&nbsp;
         <input type="radio" id="infected_lunch_option_yes" data-lunch-select="infected" name="infected_lunch_option" value=1 checked="checked" onclick="require_fields(this)">
-          <label for="infected_lunch_option_yes">Yes</label><br>
+          <label for="infected_lunch_option_yes">Yes</label><br>(Times in UTC)
 
         Start: <input type="time" id="infected_lunch_start" class="start_time" data-time-group="infected_lunch" data-lunch-for="infected" data-has-radio="#infected_lunch_option_yes" name="infected_lunch_start" value="12:30"> &nbsp;&nbsp;
         Finish: <input type="time" id="infected_lunch_finish" class="finish_time" data-time-group="infected_lunch" data-lunch-for="infected" data-has-radio="#infected_lunch_option_yes" name="infected_lunch_finish" value="13:30"><br>