▁the ▁adv ancement ▁of ▁amateur ▁astronom y ▁in ▁Bang l adesh ▁by ▁assemb ling ▁the ▁largest ▁eclipse ▁watching ▁crowd ▁ever ▁in ▁one ▁place . ▁More ▁than ▁ 2 5 , 0 0 0 ▁people ▁gathered ▁in ▁Pan ch agar h ▁Stadium ▁in ▁northern ▁Bang l adesh ▁on ▁ 2 2 ▁July ▁ 2 0 0 9 , ▁to ▁observe ▁a ▁total ▁solar ▁eclipse . ▁ ▁Summer ▁Sol st ice ▁ 2 1 ▁June ▁is ▁the ▁Summer ▁Sol st ice ▁for ▁the ▁northern ▁hem is phere . ▁On ▁this ▁day , ▁the ▁sun ▁r ises ▁at ▁its ▁northern most ▁position , ▁att ains ▁the ▁highest ▁position ▁in ▁the ▁sky , ▁and ▁sets ▁at ▁the ▁northern most ▁position . ▁This ▁day ▁also ▁car ries ▁a ▁special ▁meaning ▁for ▁Bang l adesh ▁because ▁of ▁an ▁imag inary ▁ge ographic ▁line ▁that ▁runs ▁through ▁the ▁middle ▁of ▁the ▁country . ▁The ▁Trop ic ▁of ▁Can cer ▁runs ▁through ▁Com illa , ▁south ▁of ▁D h aka , ▁and ▁through ▁Far id pur ▁and ▁K us ht ia ▁before ▁it ▁enters ▁West ▁Beng al . ▁In ▁ 2 0 0 7 , ▁An ush and hit sh u ▁Ch ok ro ▁Science ▁Club ▁organ ised ▁a ▁day - long ▁sol st ice ▁observation ▁( K ork ot - K r anti ▁D ib osh ) ▁on ▁ 2 1 ▁June ▁in ▁D h aka . ▁ ▁Science ▁fair ▁In ▁ 1 9 7 7 – 7 8 ▁session , ▁Government ▁of ▁Bang l adesh ▁organ ised ▁First ▁National