Emran Bin Yunus World Kidney Day 2015 / Kidney health for all 14 March 2015 The second Thursday of March of every year is observed World Kidney Day (WKD) with a theme. The theme of 2015 was Kidney Health 14 March 2015 World Kidney Day 2015 / Kidney health for all 14 March 2015 The second Thursday of March of every year is observed World Kidney Day (WKD) with a theme. The theme of 2015 was Kidney Health 14 March 2015