India will witness its “deepest” annular solar eclipse of this century this Sunday (June 21), with the Sun appearing as a necklace of pearls for around 30 seconds during the maximum phase along a narrow corridor running through Rajasthan, Haryana and Uttarakhand.India will witness its “deepest” annular solar eclipse of this century this Sunday (June 21), with the Sun appearing as a necklace of pearls for around 30 seconds during the maximum phase along a narrow corridor running through Rajasthan, Haryana and Uttarakhand.