No two backyards are the same and each game court is custom designed, it is difficult to say with certainty how long it will take. It depends on weather, access, terrain, permits, HOA approvals, and so on.
There are 52 cards in a deck, if you include the wild cards(joker), 54. In 52 cards there are 13 ranks and 4 suits, having the Ace as the highest in most card games. The suits are Diamonds,Clubs,Hearts and Spade. Standard card decks usually have Hearts and Diamond in Red and Clubs and Spades in Black.
There are 108 cards in a full deck of UNO cards. There are 19 in each color (RED,GREEN,BLUE,YELLOW) Then there are 8 Reverse colors 2 in each color. There are 8 skip your turn cards and there are 2 in each color. Then there are 8 plus two cards and there are 2 in each color. There are 4 plus 4 cards.