Gratitude Festival
The Gratitude Festival, also known as the Peldor Festival, was an annual holiday of great importance to the Bajoran people, which dated as far back as 17600 BC.

Traditions 
The traditional greeting during the festival was "Peldor joi". ()

Bateret leaves were traditionally burned, and participants wrote their problems on renewal scrolls which were then burned so that their troubles symbolically turned to ashes. ()

Celebrations 
In 2369, Benjamin Sisko had hoped to make a three-day trip to Bajor with his son, Jake, to attend the Gratitude Festival and visit the Fire Caves. ()

In 2371, Deep Space 9 hosted its third annual celebration of the Gratitude Festival. Kira Nerys served as Presider of the Festival. Among the crowds were jugglers and dancers. ()

While experiencing a pagh'tem'far in 2373, Benjamin Sisko believed he was in B'hala on the eve of the Festival. ()

In 2374, at the request of the Emissary of the Prophets, the festival was held on Deep Space 9. ()

External link 
 

de:Dankbarkeitsfest
nl:Bajoran dankbaarheidsfestival
pl:Festiwal Peldor
Celebrations
Bajor
Ceremonies