Importance of Poya days in Sinhala
There are 12 Full Moon Poya Days in the Sinhala Calender. They are Duruthu (January), Navam (February), Medin (March), Bak (April), Vesak (May), Poson (June), Esala (July), Nikini (August), Binara (September), Vap (October), Il (November), Unduvap (December).