International holidays - Internet Day
Celebrated on 4 AprilInternational holidays - Internet Day
Other holidays on 4 April
- International holidays - International Webmaster Day (404 Day)
- Catholic holidays - Memorial Day of Isidore of Seville (patron of the Internet)
- International holidays - World Rat Day
- UN Holidays - International Day of Mine Awareness and Assistance in Mine Action
- International holidays - International Carrot Day
- International holidays - World Stray Animals Day
- International holidays - International Piano Tuners Day
- Fun Holidays - Vitamin C Day
- Festival of purity and clarity Qing Ming in China (Ching Ming Festival)
- Funny holidays - Jeep 4x4 Day
- According to the folk calendar - Vasily Kapelnik, Vasily Solnechnik, Vasily Parnik, Vasily Teply
- Feast of the Icon of the Mother of God “Izborskaya”
- Memorial Day of Hieromartyr Vasily of Ankyra
- Memorial Day of St. Isaac of Dalmatia