This flower is also called “African Daisy” or “Cape Daisy”. Very colourful, and the yellow ones we bought at the nursery close up at night and reopen in full daylight. We also have some purple/blue ones that don’t do this so I guess it’s not a pattern of behaviour for all of these flowers.
I am a sucker for daisies and brown-eyed susans and so these guys are right up my alley.
Here’s a photograph of the purple/blue ones.