IRNA � The longest lunar eclipse in the 21st century will be visible in Tehran from 23 pm (21:44 GMT) on Friday, July 27, to 02:00 am (03:58 GMT) local time on Saturday, July 28.

Managing Director of Abbassabad Renovation Company Mohammad-Hossein Hejazi told IRNA on Wednesday that astrologists will gather in Gonbad Mina building in Tehran to see the phenomenon.

Hejazi said observation of Mars, which will be closest to earth in distance, will also be on agenda.