Problem with timedelta

timedelta no longer works, this value should be 2 but output is 1.
Even when I change number of days in 7 I still get 1

       friendly_name: 'Week Number+2days'
       value_template: "{{ (now() + timedelta( days = 2)) .strftime('%U') }}"

timedelta() is working fine.

Try +8 days.

Never knew that it starts at 0, is it changed? I use it for a reminder for the garbage. Always works fine until now. Anyway 9 in stead of 2 works. Thnx