Days And Years
15th October is celebrated as

Global Hand-washing day
World Malaria Day
World Tourism Day
World Book 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
Vikram Sarabhai was born
in 1928 C.V. Raman discovered what was later called the 'Raman Effect'
Nehru laid the foundation of Science labs all over India

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