Boy's Day in Poland (Dzien Chlopaka)
Celebrated on 30 SeptemberBoy's Day in Poland (Dzien Chlopaka)
Other holidays on 30 September
- Internet Day in Russia (Runet Day)
- International Translation Day
- International Podcast Day
- Day of Special Motorized Military Units (SMMU) of the Ministry of Internal Affairs of the Russian Federation
- Purr and Stretch Day
- International Blasphemy Rights Day
- Day of the liberation of Karelia from fascist invaders
- According to the folk calendar - Ecumenical Women's Name Days, Faith-Hope-Love
- Save Your Photos Day
- Ural River Day
- International Lace Day
- Grandmother's Day in Moldova (Ziua bunicii)
- Orthodontist Day
- K-Pop Day
- All-Ukrainian Library Day
- Adoption Day in Ukraine
- Day of Justice Workers in Kazakhstan
- Day of Saint Gregory, Illuminator of Armenia
- Day of National Security Bodies of Turkmenistan
- National Love People Day in the USA
- National Chewing Gum Day
- Hot Mulled Cider Day in the USA
- National Mud Pack Day in the USA
- Recovery Day in Canada
- Orange Shirt Day in Canada
- Sukkot (Feast of Tabernacles) among the Jews
- Independence Day (Liberation Day) of the Republic of Abkhazia
- Memorial Day of the Holy Martyrs Faith, Nadezhda and Love and their mother Sophia
- Feast of the Icon of the Mother of God of Makarevskaya