Lhabab Duichen
Lhabab Duichen is held on October 31. This event in the third decade of the month October is annual. 
Help us
Help us 
Lhabab Duisan/Duichen is a festival in Tibetan Buddhism to commemorate the return of the Buddha Shakyamuni from the heaven of the Thirty-Three Gods to earth.
It is celebrated on the 22nd day of the ninth month of the Tibetan lunar calendar. It is believed that the results of positive and negative actions performed on this day are multiplied ten million times.
According to legend, the Buddha ascended the Trāyastriṃśa heaven temporarily at the age of 41, in order to give teachings to benefit the gods in that desire realm, and to repay the kindness of his mother by liberating her from Samsara.
He was exhorted by his disciple and representative Maudgalyayana to return, and after a long debate and under a full moon agreed to return. He returned to earth a week later by a special triple ladder prepared by Viswakarma, the Hindu-Buddhist god of machines.
On Lhabab Duchen, the effects of positive or negative actions are multiplied ten million times. It is part of Tibetan Buddhist tradition to engage in virtuous activities and prayer on this day.
Similar holidays and events, festivals and interesting facts
Democracy Day in Tibet on September 2
Losar, Tibetan New Year on February 17
Tibetan Uprising Day on March 10 (Tibetan independence movement);
Serfs Emancipation Day in Tibet on March 28 (Day of the liberation of Tibetans from serfdom in China, Tibet);
Chökhor Düchen or Festival of the Turning of the Wheel of Dharma on July 18
International Day of Care and Support on October 29
Reformation Day on October 31 (Slovenia, parts of Germany, Chile, El Salvador, Dominican Republic, various Protestant churches with a particular emphasis in Lutheran and Reformed ones);
All Saints' Day a holy day of obligation on November 1 (a national holiday in many historically Catholic countries. And its related observance: Day of the Innocents, The first day of Day of the Dead or El Dia de los Muertos celebration. - Mexico, Haiti)