Estonian holidays - National Flag Day
Celebrated on 4 JuneEstonian holidays - National Flag Day
Other holidays on 4 June
- UN holidays - International Day of Innocent Children Victims of Aggression
- Russian Holidays - Crane Operator Day (Crane Driver Day) in Russia
- Funny holidays - Birthday of the Krokodil magazine
- Holidays of Kazakhstan - Day of State Symbols of the Republic of Kazakhstan
- Holidays of the Slavs - Yarilo Mokry, (Tribog's day, Troyan tonsure)
- Funny holidays - International Spoiler Day
- Finnish Defense Forces Banner Day
- Holidays in Moldova - Bank Worker Day (Ziua Bancherului)
- According to the folk calendar - Basilisk
- Holidays of Russia - Day of the Republic of Ingushetia
- Memorial Day of the Righteous Jacob of Borovichi, Novgorod Wonderworker
- Day of the Holy Martyr John Vladimir, Prince of Serbia
- Memorial Day of the Martyr Basilisk of Komansky