In order to study the effect of sowing date on performance of hybrids yellow maize, tow field experiment were conducted in two successive summer seasons 2016 and 2017 at the Toshka Experimental station of Desert Research Center, Abu Simbel City, Aswan Governorate. Five sowing dates  ( March 1^st, March 20^th,  April 10^th, July 20^th and August 10^th) under studied on the yield and its attributes of four yellow maize  hybrids(S.C. 168, S.C. 176,T.W.C.353 and T.W.C. 360 ). Results indicated that sowing date and hybrids significantly affected on plant height, number of grains per row, 1000 grain weight and grain yield kg/fed.  The late sowing on Aug. 10^thproduced the highest significant parameters of maize plants; plant height, No. of ears/plant, number of raws/ear, 1000-grains weight and grain yields. On the reverse, the lowest values were obtained at medium sown on April10^th on sown T.W.C. 360 hybrid was significantly higher than  other hybrids in all traits under study in two seasons. The interactions was significant effected on plant height, No. of ears/plant, No. of rows/ear, No. of grains/ear, grains weight/ear and grain yield in both seasons.  It could be concluded that sown SC. 176 or SC.168 hybrids during 10^th August successfully improving production of maize yield and its components under Toshka conditions.