This study is depends on an empirical method and it is substained by Kyrgyz's literal sources. In this study, we investigated to traditions and public beliefs concerning to religious days, nights, and feasts in Kyrgyz society. There are three eves and different beliefs about ancestor souls on these days in Kyrgyz society. In Ramadan which believed in as month salvation from sins, there is a tradition "Caramazan". Night recognized and celebrated as "Kandil night" is only "Kadir night". Because of the beliefs in ancestor's souls, Ramadan feast is called "feast of deads"; olso Kurban feast is called ''feast of alives" in terms of social character.