Days And Years
17th May is celebrated as

World Car free Day
World Mathematics Day
International Day of Peace
World Information Society Day

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

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

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