Both #whiteiswhite and #wiwcontest are organized by @dmcamera. Please look into his post for more details:

https://steemit.com/wiwcontest/@dmcamera/wiwcontest-challenge-contest-congratulations-week-9-winners

Monday: White Photographed Against White
Tuesday: Animals
Wednesday: Flowers
Thursday: Food And Drink
Friday: Architecture
Saturday: Water In Nature
Sunday: Anything Goes