I was observing the sky (because it was very clear, without any clouds and pretty sunny), when i notice this white glowing aspirin shaped ufo, hovering for a couple of seconds then going up in the sky, making a right curve up. after that, more and less 10 seconds, there is another object, similar to a drone with wings, near the same area in the sky than the previous ufo. this one didn't left any kind of trace or mark in the sky, like a ''normal'' plane would. none of them, actually. the event, between on and another ufo sighting, had the duration of +/- 20 second and it was witnessed by 3 people. coimbra, portugal 05/07/2017 19:55 (time of the sighting aprox.)