Jai Sri Ganesha,
Coming Purnima is not just a full moon but much more to rejoice in colors of life,
Holika Dahan represents the burning of evils, sorrows and past logs of afflictions that to paves the path festival celebration with commencement of spring,
Day do relates to the Shiva, to a mystic event Shiva reduced Kamadev to ashes to prevent from extravaganza from the truth of Kama,
Holika the truth of deceitfulness reduced to ashes by Vishnu to prevent his devotees from his afflicted reasons, and paves the path for a fair spring of life, and Purnima support it in spirit of cult and celebration,
May Lord bless all,
Thanks, please