How do I see how much time my baby slept last night? April 07, 2017 23:49 Updated Follow To see the amount of time your baby slept last night, go to the Nights tab and view the Time Asleep metric. To learn more about how each sleep metric is formulated, click here. Related articles App 101 What are the differences between day and night video summaries? My activity feed contains no moments What is heat map? Why is my night summary getting cut off, starting late or ending early? Comments 0 comments Article is closed for comments.