Its possible for both lake visit in One Day but its very very hard .....
If you want track of both lake in one day Its batter you starting your track from Attor village early morning 06 Am & Reach at Kandol Lake 09 Am & spend 1 Hrs at lake & goes to Spin Khoor Lake & reach 03 PM & spend 1 Hrs & back to Attor Village at 0630 pm but you must purchase the food items, Drinks & other martial from Attor Village before staring the track.