Flying straight line south to north

White oval object observed passing overhead. No sound, trail or lights. Unsure of altitude, did not seem very high (maybe 1000 ft?), but moving very fast from south to north. Day was mostly sunny, the area of the sky object observed against was clear blue. It disappeared towards north horizon before it could be observed with binoculars which were in my backpack or by my husband who was under a beach umbrella next to me at the time.