The Savior of the Apple Feast Day, or Apple Spas, is an Eastern Slavic folk name for the Feast of the Transfiguration, celebrated by Orthodox Christians on August 19.

This holiday is mostly celebrated in countries like Russia, Ukraine, and Belarus.

The feast day has pre-Christian origins and is linked to the harvesting of ripe fruits, particularly apples. It symbolizes the beginning of autumn and the transfiguration of nature.

Traditionally, the day includes the blessing of fruits, especially apples, which are then consumed by the faithful. This practice is similar to the First Fruits tradition in Judaism.

In Eastern Slavic folklore, Apple Spas is marked by processions and blessings of harvests. People often eat apples, apple pies, and other apple-based dishes during this holiday, regardless of their religious affiliation.