Question: What is the day of the celebratoin whose concept is based on the East Slavic fertility goddess ?

text: Deities of Slavic religion
Goddesses -- Other goddesses

Deities of Slavic religion, arranged in cosmological and functional groups, are inherited through mythology and folklore. Both in the earliest Slavic religion and in modern Slavic Native Faith's theology and cosmology, gods are arranged as a hierarchy of powers begotten by the supreme God of the universe, Rod, known as Deivos in the earliest Slavic religion. According to Helmold's Chronica Slavorum (compiled 1168-1169), obeying the duties assigned to them, [the deities] have sprung from his [the supreme God's] blood and enjoy distinction in proportion to their nearness to the god of the gods. The general Slavic term for god or deity is бог bog, whose original meaning is both wealth and its giver. The term is related to Sanskrit bhaga and Avestan baga. Some Slavic gods are worshipped to this day in folk religion, especially in countrysides, despite longtime Christianisation of Slavic lands, apart from the relatively recent phenomenon of organised Slavic Native Faith (Rodnovery). Slavic folk belief holds that the world organises itself according to an oppositional and yet complementary cosmic duality through which the supreme God expresses itself, represented by Belobog (White God) and Chernobog (Black God), collectively representing heavenly-masculine and earthly-feminine deities, or waxing light and waning light gods, respectively. The two are also incarnated by Svarog-Perun and Veles, whom have been compared to the Indo-Iranian Mitra and Varuna, respectively. All bright male gods, especially those whose name has the attributive suffix -vit, lord, are epithets, denoting aspects or phases in the year of the masculine radiating force, personified by Perun (the Thunder and Oak). Veles, as the etymology of his name highlights, is instead the god of poetic inspiration and sight. The underpinning Mokosh (Moist), the great goddess of the earth related to the Indo-Iranian Anahita, has always been the focus of a strong popular devotion, and is still worshipped by many Slavs, chiefly Russians.
Concept Name variations Description / Various hypotheses Main attestations
Chislobog -Zislobog , Ziselbog -Kricco Literally Number Giver . She is the goddess of time calculation , of the lunar month and of the moon 's influences . Represented as a youthful female with a crescent moon on her forehead . Kricco is her Wendish name and she was also worshipped as the protectress of the crops -
Karna - Goddess of the funerals , personifying tears . She is compared to the Indic Karna -
Kostroma - Goddess of spring and fertility . She is the female counterpart of Kostromo , and she is connected with grain . Her celebration falls on 29 June , the Christian Feast of Saints Peter and Paul , during which a village maiden representing the deity would be ritually bathed in a stream and then worshipped for an evening of feasting and dancing . The divine twins Kostroma and Kostromo are one aspect of a fourfold fertility deity , whose other aspects are Lada-Lado , Yarila-Yarilo , and Kupala-Kupalo East Slavs , Russes
Lelia - Goddess of spring and mercy , daughter of Lada . According to Boris Rybakov , Lelia is the closest equivalent of the Greek Artemis , being associated with the Ursa Major constellation -
Matergabia -Matergabiae Matergabia literally means Fire Mother . She is the goddess of the hearth , comparable to the Roman Vesta . Her Baltic cognate is Gabija Slavs - Balts
Ognyena -Ognjena ( Marija ) -Onennaya ( Mariya ) -Marija Ognjenica -Marija Glavnjenica -Ognevikha Ognyena literally means She of the Fire , Fiery , and is the goddess of the celestial fire , sister of Perun . She is another personification of the great goddess of the earth ( Mokosh ) when she is dried up , and thus elevated , by celestial fieriness . She is frequently named Ognyena Maria ( Fiery Mary ) in the South Slavic tradition , since , in Christianised folk religion , Ognyena has been syncretised with the figures of both Margaret the Virgin and the Virgin Mary , regarded as the sisters of Saint Elias . She is celebrated on 30 July ( Julian 17 July ) South Slavs
Ozwiena - Goddess of the echo , and generally of voice and oral communication -
Baba Slata - Zlata Baba -Slotaia Baba -Zolotaya Baba , Zolotaja Baba -Zolstoia Baba -Baba Zlatna -Baba Korizma -Baba Gvozdenzuba Her name literally means Golden Old Lady . She is worshipped among Finno-Ugric populations along the Ob River , but also among Slavs . She has two other aspects , Baba Korizma ( Lent Old Lady ) and Baba Gvozdenzuba ( Iron-Toothed Old Lady ) . She has been compared to the Greek Hecate Finno-Ugrics Slavs
Uroda - Goddess of ploughed land , of agriculture West Slavs , Slovaks
Bevo -Bevana -Bevona Goddess of knowledge , mastery , personifying exploration and earth . She is often described as young , green and cheerful creature with black eyes , resembling Roman mountain nymph Maia South Slavs
Ursula -Ursala -Orsel -Horsel -Urschel Goddess of the moon associated with the Ursa Minor constellation . She is compared to the German goddess Urschel and the Greek Artemis -
Veliona -Velonia -Vielona , Vielonia -Veliuona -Velu Mate -Velnias -Velns Goddess of death , warden of the souls of the ancestors . Though the name is feminine , the polarity of the god/dess is not sure . Among the Balts , Velnias or Velns is male , but there is also a Velu Mate ( Mother of the Souls ) . Her name shares the same root of Veles , * wel Slavs - Balts
Vesna - Goddess of spring South Slavs