slow moving light switched off before running away faster on lower levelI was going to supermarket and i noticed a strong small light bigger than stars in the sky. I thought it is a heading light of an aircraft landing as my area is in the airport landing way. The direction of the light was from the west to the east and this is not the airport runway direction so i started to dout about the light and also it was a single light and aircrafts are having blinking lights plus the heading.the light was moving very very slow for long time then it started to become very weak slowly till it is totally switched off. after the light switched off i could trace the moving object as it was a clerly circle shape shaded object in front of the sky stars plus a very weak green colored as if a lamp switched off. The speed of the object changed and became very fast moving far away.before it dissapears i saw it coming to lower level and i could recognize the common UFO shape very far away before it disappers behind the surrounding buildings.Note: The weather was very very clear that night with no clouds.