Stephen Schwartz reveals that @wicked_musical contains several musical Easter eggs from “The Wizard of Oz,” including a nod to “Somewhere Over the Rainbow.” He explains that the show’s “Unlimited” motif was deliberately shaped to echo the classic melody, but different enough not to get sued. | CBS Sunday Morning

How Is the Date of Easter Calculated?

When is Easter, and how is its date determined?

Everything You Need to Know About Why Easter's Date Changes Every Year