Vedic measure of distance: Yojana (योजन)

1 yojana is equivalent to 14.484096 km = 9 miles

1000 dhanus =1 yojana

1 dhanu = 96 angulas = 4 hastas

1 angula = ¾ inch=10 Yava

1 yojana=4 Krosas= 4000 Hastas=8000 feet

1 Gavyūti (गव्यूति-2.01km)=2000 Dhanus

Speed Of Light = 2202 Yojanas/Nimishardha or 19818 Miles/0.106 Second

तथा च स्मर्यते…

योजनानां सहस्रे द्वे द्वे शते द्वे च योजने।
एकेन निमिषार्धेन क्रममाण नमोस्तु ते॥

[Mandal 1, Sukta 50, Mantra 4, Sayanacharya Commentary]

30 Muhurtas/60 Nadis = 24 hours (अहोरात्रम्)

1 Muhurta=48 Minutes=30 Kalas= 2 Nadis

1 Kala=96 Second=30 Kashtas

1 Kastha=3.2 Second=15 Nimishas

1 Nimishas=0.213 Second

1/2 Nimishas=0.1063 Second