The movie, directed by Abhishek Kapoor, features Sushant Singh Rajput with Sara, who is the daughter of Saif and his former wife Amrita Singh.
Producer Arjun N. Kapoor of KriArj Entertainment said in a statement: "December 21 offers us a long run at the box office with the Christmas and New Year holidays. Apart from a successful partnership between Abhishek Kapoor and Sushant Singh Rajput, the film also marks Sara Ali Khan's debut and releasing the film during this period will give her the launch platform she deserves."
He said the film is their "tribute to Lord Shiva as it is an intense love story born in Kedarnath".
"Kedarnath is fondly known as the shelter place of Lord Shiva and this beautiful story unfolds against this picturesque background," the producer added.