ଛାୟାପାଦ
ସୂର୍ଯ୍ୟଙ୍କ ଛାୟାଦ୍ୱାରା ଦିବସର ସମୟ ନିରୂପଣ — Measurement of time by sun's shadow; measuring the time of the day by the sun-dial.
