August 30 Holidays and Memorable Dates: Birthday of the Electric Vacuum Cleaner CD Cassette's Birthday Day of Delivered Parcels International Day of the Victims of Enforced Disappearances International Puma Day (Día Internacional del Puma) International Whale Shark Day Slinky Day Zubrovka Holiday Kazan City Day Miner's Day Professional Holiday of Ded Moroz (Grandpa Frost) Republic of Tatarstan Day Viticulture and Winemaking Day in the Republic of #Crimea Chaco Culture Day