diff --git a/environment.env b/environment.env
index 4283c09..6d88ba9 100644
--- a/environment.env
+++ b/environment.env
@@ -3,7 +3,9 @@ BASIC_AUTH_PASSWORD=password
 
 OFFICE_RnD_TOKEN=token for Office RnD API requests
 MAX_BACK_TO_BACK_DIFFERENCE=Time in minutes
-EARLIEST_UNLOCK=2
+EARLIEST_UNLOCK=Time in minutes
+
+UI_TIMEZONE=Timezone for user interface | https://en.wikipedia.org/wiki/List_of_tz_database_time_zones | example : America/Los_Angeles
 
 UNSCHEDULED_USE_TIME_RESOLUTION=Time in minutes
 UNSCHEDULED_USE_CHARGE_FEE=Charge fee