According to the folk calendar - Evdokia Svistunya

On May 30 (May 17 is the date according to the old calendar style), people celebrate Evdokia Svistunya The name of the national holiday is given in honor of Saint Euphrosyne of Moscow, revered by the church on this day The history of Euphrosyne began in the 14th century, she was the daughter of the Suzdal prince, and was raised in Orthodoxy The Moscow prince Dmitry Donskoy became her husband, thanks to which friendship was established between the two principalities Euphrosyne raised children and organized the construction of churches and monasteries In her old age, she became a nun under the name Evdokia, and a few months later her soul left the earthly world Evdokia was popularly nicknamed the Whistler, since the winds became more frequent on that day They were so sharp that it seemed like someone was whistling By the day of Evdokia they judged the coming summer, what day it was, and so they expected the future summer season On Evdokia Svistunya, residents went to their gardens to hill up potato bushes Hilling was the name for weeding the beds of weeds, enriching the soil with oxygen and picking up fine soil to the trunk of grown bushes After the lower stem was covered with soil, new shoots appeared on it, producing an additional row of root crops Residents believed that hilling on this day would help rid potatoes of insects and increase yield After a hard day's work, the owners prepared potato dishes for dinner Eating it was considered a mandatory ritual to obtain a rich potato harvest On this day, the people revered Saint Andronicus; he was also called Ondron He was considered a protector against drought and a patron of rain It was said that he opened the heavens for the sprinkling of water on the earth, so Ondron was prayed to, asking for good rains They were highly anticipated during this period, because the crops had already been sown, the only thing missing was moisture Special rituals were performed to attract rain In some regions, residents tried to revive abandoned springs and wells: they cleaned them of pollution, removed stones and branches There was a belief that by throwing poppies, grains or coins into a well and reading the spell, you could make it rain Adult men also called for rain when they went out into the open field They read the conspiracy, bowed to all directions and stuck an aspen branch into the ground, having previously torn off the leaves on it If a wind from the north was observed on Evdokia Svistunya, then they were preparing for the cool summer season Cold weather foreshadowed hail in the summer Seeing the rain falling under the new moon, the inhabitants expected frequent rain in the summer The flickering of skates on roofs, church domes or weather vanes predicted an impending thunderstorm