Burger King offering free solar eclipse Whoppers

(CNN) – Burger King is gearing up for the Solar Eclipse.

On April 8, the fast food chain is giving out free Whoppers in honor of the rare celestial event.

The deal is exclusive to Royal Perks members who text “eclipse” to 251251.

Fans can then redeem the buy-one-get-one offer through the app.

A solar eclipse happens when the sun, moon and Earth line up.

As the moon passes between the sun and Earth, it casts a shadow on our planet that will fully block the sun’s light in certain areas.

The last total solar eclipse visible in the U.S. happened in 2017.