I stepped out to my back yard to check the outside temperature and spotted greenish blue dimmed (glowing) spot 30-40 degrees over the horizon. My first thought was a moving galaxy passing near earth going in noticed. Then I called my 11 year old son see if he could make out a shape. Then I realize it was moving SW and rising. When it was on the SW sky about 50 degrees it look vertical glowing spot in the sky.My son and I observed air traffic going below it without an incident. Then it continued trising and travelling SE. When it was 80 degrees from us I was able to see multiple flashing lights. I raised my hands in the air and spread them to get an idea how big this was and I was able to spread them to 60 degrees and it was within. Wasn't sure it descended at that point or not. It was large and made NO noise. I have actual voice of my son trying to record this on his cell phone but no footage. (I tried to capture it moment I saw it but it was too far out and gave it up.)We watched it till it disappeared into SE sky over the roof. Then 2 days ago I found out my neighbour and his wife and 2 others also witnessed this at same exact direction and time and the day! He was able to observed with his binoculars.