how much sunlight does a christmas cactus need

Christmas cacti are a type of succulent that are typically grown indoors, so they don't require a lot of sunlight. They can tolerate low light conditions, but they will do best if they are given at least 4-6 hours of indirect sunlight per day. If you're growing them outside, they should be placed in an area that gets partial shade during the day. It's important to avoid exposing them to direct sunlight, as this can cause the leaves to become sunburnt.