Days And Years
7th December is celebrated as

World Malaria Day
International Nurse Day
World Kindness Day
International Civil Aviation Day

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Days And Years
India Celebrates February 28 every year as 'National Science Day' because on this day

first Indian Space craft was launched
Nehru laid the foundation of Science labs all over India
Vikram Sarabhai was born
in 1928 C.V. Raman discovered what was later called the 'Raman Effect'

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