World Tuberculosis Day was Observed On 24 March World Tuberculosis Day 2015 was globally observed on 24 March 2015. The theme for the year 2015 is continuation of the 2014 theme Reach the 3 Million. The main sub-theme and message for the year 2015 is Reach, Treat, Cure Everyone. The World Tuberculosis Day is annually celebrated on 24 March to commemorate the day on which Dr. Robert Koch discovered the cause of tuberculosis, the TB bacillus in 1882. The day aims to build public awareness about the global epidemic of tuberculosis (TB) and efforts to eliminate the disease. World Water Day 2015; World Water Day 2015 was globally observed on 22 March 2015 with the theme Water and Sustainable Development. The theme for the WWD 2015 talks about how water links to all areas we need to consider creating the future we want. World Water Day is celebrated every year to make a difference for the members of the global population who suffer from water related issues. It’s a day to prepare for how we manage water in the future.