Leap Day (; ; <abbr>lit.</abbr> The Day of Death) is a Thai mystery thriller television series starring Jirawat Sutivanichsak (Dew), Naravit Lertratkosum (Pond), Atthaphan Phunsawat (Gun) and Pathitta Pornchumroenrut (Pahn).
Produced by GMMTV together with Keng Kwang Kang Waisai, it was announced as one of the television series of GMMTV for 2024 during their "GMMTV2024: UP&ABOVE Part 2" event held on April 23, 2024. It officially premiered on GMM 25 and Viu on April 1, 2025, and ran until June 24, 2025.
Day (Naravit Lertratkosum) and Night (Jirawat Sutivanichsak), who were born on February 29th, are both afflicted by a horrible curse that will take away their loved ones every four years. The curse's threat to others around them keeps the two isolated. One day, Night meets Dream (Pathitta Pornchumroenrut), his classmate who becomes his source of happiness. Meanwhile, Day is caring for Ozone (Atthaphan Phunsawat), an autistic kid of his distant relative after his mother dies. As Day and Night's twentieth birthday draws near, they become more concerned about their loved ones.
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