SAPEDAShAB

SAPEDAShAB, shabhoi ravshanero guyand, ki avvali tobiston, vaqte ki davomati sapedai shomi to ba lahzai vuqui sapedai sahari merasad, ruy medihand.

Dar hardu nimkurai Zamin, dar arzhoi az 603 balandtar, dar surate ki nisfi shab markazi Oftob zeri ufuq az 7° pasttar namefuroyad, mushohida meshavad. Sapedashab dar Leningrad (taqriban 60’ a. sh.) az 11 iyun to 2 iyul va dar Arkhangelsk (64°34′ a. sh.) az 13 may to 30 iyul davom mekunad.