Pulses can stay open for a maximum of two weeks, Monday to Sunday the week after.
To extend an already scheduled pulse to keep open for two weeks, follow these steps:
1. Go to Schedule > Scheduling
2. Click on the scheduling you want to edit
3. Click on "Edit dates and emails":
4. Change to Sunday the week after the date the questions were asked
On Monday morning, the day after the pulse closed, you will be able to see the calculated results on all results pages.