Design and resuscitation of Equatorial Ring with a sundial by Iraj Safaei, head of University of Kashan Observatory

Bandar Abbas's sundial with equatorial_ring aplication

Bandar Abbas is the largest port in southern Iran.

Aplications:
1- Determine the Iran standard time
2- Detection Iranian Calender
3- Noon prayer time
4- Detection of the vernal equinox, the autumnal equinox, sumer solstice and winter solstice

In the old texts, the Persian Gulf and the Sea of Oman say the Persian Sea.