I was studying early morning for my private pilots license in my living room with my curtains open.The window faces a valley.It was still dark outside.Sun usually comes up around 5.45-6.00. Looked up from my desk through the window then open and then saw 2 bright white lights flyby away from me.So my line of sight of them was from the top of my window frame and saw them fly over and away from my house down to the valley and lost sight of them as they flew over some trees and dissappeared behind them. They were pure white lights which sparkled leaving a small tail of light behind them. They were the size of roughly a Soccer ball maybe silghtly bigger. They flew together about 2 meters apart fairly fast and smooth in motion changing altitude in relation to the ground.As they passed over I remember there was no sound produced by them. No sound of air or an engine.Its as if the air did not make any resistance to these objects passing through it at that high velocity. During this year 1997 I saw these same 2 objects once in the late afternoon as I was going home. I was comming up along the valley in the car and glanced at the skyline over the trees towards my house and saw these same 2 lights appear high in the sky and drop vertically down above the tree line and disappear as if they switched off there lights. The distance from me to the treeline where I saw the lights drop out of the sky and then disaapear was roughly 500meters.It must have lasted 2 seconds.They moved very fast and hovered over the tree line for maybr 0.5seconds before I lost sight of them.I had a close up of the same light but this time it was just one on its own.And I saw it as I was in my bedroom looking out the window to one of the trees in my garden about 8 meters away and saw this light fly by 4 meters from me and it made absoluetly no noise what so ever.As if it nothing passed by.It passed me at birds speed and was the size of a football again the same pattern of bright sparkling white light with a tail. It did not have any effect on the nosiey birds in the tree nor my 6 gaurd dogs whoose kennels lie below the tree. It was amazing.I never told anyone I know and kept it to me all these years because I knew no one would belive.I have never seen these lights again since and I have also spent little time in Kenya since but I will never be able to forget this.Surprisingly never did I feel threatened during these encounters or shocked but felt more peacefull then normal.I find that very strange as a natural reaction would be to be startled.I hope this account helps your records and may prove useful to yourselves. Kindest regards.((NUFORC Note: Witness indicates that the date of the incident is approximate. PD))