Timestamps are converted to start of the days and filtered to b unique before calculating streaks

server/utils/date-utils.js

@@ -3,7 +3,7 @@ import moment from 'moment-timezone';
 // day count between two epochs (inclusive)
 export function dayCount([head, tail], timezone = 'UTC') {
   return Math.ceil(
-    moment(moment(head).tz(timezone).endOf('day')).tz(timezone).diff(
+    moment(moment(head).tz(timezone).endOf('day')).diff(
       moment(tail).tz(timezone).startOf('day'),
       'days',
       true)