Example image of eyePlorer eyePlorer map for 'Indian astronomy': Vedanga Vedas Rigveda Spherical Earth Cardinal direction Shulba Sutras Surya Siddhanta Romaka Siddhanta Yavanajataka Varahamihira Aryabhata Vedic period Nakshatra Panchangam Tithi Kalpa (time unit) Rtu January March May November September Shishir 4th millennium BC Calendar era February 18 Hindu calendar January 23 Kali Yuga Bikram Samwat 78 Indian national calendar Saka Saptarshi Calendar Gnomon Jacob's staff Clepsydra Armillary sphere Azimuth Sundial Astrolabe Firuz Shah Tughlaq Mahendra Suri Ursa Minor Engineering Jai Singh II of Amber Kashmir Lahore Metallurgy
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