Is Water lily sleep?
The answer is “YES”, do you believe?
I bought 10 Water lily flowers from the market. The first day they were in full blossom . But when I got up the next morning, I found them closed back up. The scene just looks like these flowers were asleep and didn’t get up.
I took some pictures and recorded the water lily's time schedule; I found this flower blooming  is similar to my time schedule in the morning. But I usually get up earlier than the flower. 

7:00am   Sleeping

8:30am   Waking up and dressing up for the work

9:30am    On the way to the office.

10:00am       Working

Why water lilies keep blossoming and then closing back up?
Water lilies are day bloomers. They naturally open around 9:00am. and close around 4 p.m. They will also close if rained or watered on. On dark, cloudy days, they may not open at all. Generally, their flowers rest on the water surface. The blossoms only last about 2-3 days. This flower is sensitive to the sunlight.