P N Panicker is known as the Father of the Library Movement in Kerala. He died on 19 June 1995, at the age of 86. The Government of Kerala observes 19 June annually as Vayanadinam (Day of Reading) with a week-long series of activities at schools and public institutions to honour the contributions of P.N. Panicker to the cause of literacy, education and library movement.

World Blood Donor Day is day dedicated to "thanking and celebrating voluntary non-remunerated blood donors". It occurs on June 14, the birthday of Karl Landsteiner, the creator of the ABO blood group system, for which he won the Nobel Prize. The first day was held in 2005.

The theme of 2012 world blood donor day campaign-"every blood donor is a hero" focuses on the idea that every one of us can become a hero by giving blood.

One of the main goals of the World Blood Donor Day is to ensure the availability of 'safe blood' for transfusion.

ലോക പരിസ്ഥിതി ദിനം June 5:
പരിസ്ഥിതി പ്രശ്നങ്ങളെ കുറിച്ചുള്ള അവബോധം വരുത്താനും കർമ്മ പരിപാടികൾ ആസൂത്രണം ചെയ്യാനുമാണ് പരിസ്ഥിതി ദിനം ആചരിക്കുന്നത്. ഐക്യരാഷ്ട്രസഭ ജെനറൽ അസംബ്ലിയാണ് 1972 മുതൽ ഈ ദിനാചരണം ആരംഭിച്ചത്.