Question

Name two natural events which were used for measuring time in older days​

Answer 1

Answer:

Position of sun and the movement of migratory birds

Answer 2

The sundial is looked on as being a form of sun-powered clock. ... This shadow clock or sundial permitted one to measure the passage of hours within a day. Another very early form of clock to tell the time was the water clock. The water clock was used by the ancient Greeks.