27 Kislev is when Māgha Pūjā is celebrated . Chotrul Duchen (in Tibet),Buddha's Birthday,Lantern Festival (in China),Daeboreum (in Korea),Koshōgatsu (in Japan),Tazaungdaing festival (in Myanmar),Tết Nguyên tiêu (in Vietnam) is related to Māgha Pūjā . Māgha Pūjā begins on the last night of the month of Sha'ban . Māgha Pūjā 2018 date was Mon 27 Aug . Māgha Pūjā 2020 date was October 12 . Māgha Pūjā 2021 date was August 25 . the Jain Temple,procession with light are the observances in Māgha Pūjā . The frequency of this festival is annual . The festival is observed by Burmese,various Little Italys around the world,Japanese,Afghanistan . Rakri,Saṅgha Day,Fourfold Assembly Day,Ganeshotsav is also called Māgha Pūjā . The 2019 date of the festival was 17 April 2019 . Buddhist,Historical are the type(s) Māgha Pūjā festival . The common name of the festival Vaishakhi Purnima is Māgha Pūjā . Shwedagon Pagoda Festival,idol immersion,folk customs are the celebrations of this festival . Because of 250 disciples the festival Māgha Pūjā is observed . 2 Tevet or 3 Tevet is when this festival ends 
The festival Māgha Pūjā is also called as Vaishakhi Purnima