1388th day of war: what holidays and events Ukrainians celebrate on December 13.

According to ТСН: December 13, 2025 — Saturday. The 1388th day of war in Ukraine.

What holiday is today

Today, December 13, the church calendar marks The Day of Remembrance of Saints Eustratius, Eugene, Axentius, Mardarius, and Orest. These five Christian martyrs suffered in the 4th century during the persecutions of Emperor Diocletian. They courageously refused to renounce their faith while enduring torture and execution. Special honor is paid to Saint Eustratius, who supported other martyrs and left a prayer that is still read in liturgies.

Also, on December 13, Ukraine and the world celebrate International Day of Shareware. This holiday is dedicated to so-called 'shareware' — programs that can be tried for free before purchase. It is celebrated on the second Saturday of December. The idea of shareware software emerged in the early 1980s. The first such product is considered to be 'PC-Talk' (1982) — a telecommunications program by Andrew Fluegelman.

Moreover, December 13 is International Violin Day. This holiday honors one of the most beloved and ancient instruments of world musical culture — the violin. Its modern form took shape in the 16th-17th centuries and is closely linked to the musical evolution of Western Europe. Violin Day is a wonderful opportunity to appreciate the contributions of violin makers, musicians, and composers who, through this instrument, brought beauty, emotion, and harmony to people's lives.

Additionally, December 13 marks National Ugly Christmas Sweater Day. This unofficial, fun holiday celebrates festive sweaters with holiday designs (deer, snowflakes, Christmas trees, etc.). The idea is simple — to inspire people to get into the festive spirit, unite in the pre-Christmas atmosphere, and allow for creative expression — to wear cheerful, bright, sometimes even 'a bit silly' attire that lifts spirits.

These holiday dates remind us of the diversity of our culture and traditions. Honoring the memory of the holy martyrs emphasizes the spiritual aspect of life, while the International Day of Shareware and National Ugly Christmas Sweater Day introduce elements of modernity and festive cheer into our daily lives. Thus, everyone can find something interesting and close to their heart on this day.