I made a time-lapse video of a cactus blooming. This cactus sits in a shady area of our balcony. Yesterday I noticed that it was going to bloom, so I set the time lapse camera up to start taking pictures every thirty seconds beginning at 8:00 AM. This 24 second video captures about 3.5 hours of cactus blooming.
Here are some stills from the beginning, middle and end.