-// NOTE TO TRANSLATORS: dropdown.this_day does not necessarily means "today". It means a specific ("this") day selected on calendar. See Charts.
-'dropdown.this_day' => 'this day',
-'dropdown.this_week' => 'this week',
-'dropdown.last_week' => 'last week',
-'dropdown.this_month' => 'this month',
-'dropdown.last_month' => 'last month',
-'dropdown.this_year' => 'this year',
+'dropdown.current_day' => 'today',
+'dropdown.previous_day' => 'yesterday',
+'dropdown.selected_day' => 'day',
+'dropdown.current_week' => 'this week',
+'dropdown.previous_week' => 'previous week',
+'dropdown.selected_week' => 'week',
+'dropdown.current_month' => 'this month',
+'dropdown.previous_month' => 'previous month',
+'dropdown.selected_month' => 'month',
+'dropdown.current_year' => 'this year',
+'dropdown.previous_year' => 'previous year',
+'dropdown.selected_year' => 'year',