It is celebrated each year around the time of the vernal equinox, and is typically celebrated in March but sometimes as early as February.
Holi Festival Of Colours Trailer 2015 from Holi Festival Of Colours on Vimeo.
It is mainly observed in both India and Nepal or other countries where there is a significant Hindu population.
The organisers believe that gulal, the coloured powder, intoxicates people so their religion and social status don’t matter.
After a day of play with colours, people clean up, wash and bathe, sober up and dress up in the evening and greet friends and relatives by visiting them and exchanging sweets.
Read more: https://www.thesun.co.uk/living/1595963/holi-festival-2017-hindu-colour/