March 13 Open an Umbrella Indoors Day

Open an Umbrella Indoors Day Observed annually on March 13th. There is an old superstition about opening your umbrella indoors and that it would bring you bad luck. Open an Umbrella Indoors Day was invented in 2003 by a man called Thomas Knibb. Knibb allegedly hoped to defy silly superstitions by encouraging people to open their umbrellas indoors and observe the (non-existent) consequences.

Open an Umbrella Indoors Day encourages you to do just that and note if you have any bad luck.