I was in my house when i heard an aircraft above and waited for it to go by since i'm used to commercial aircraft off course close by my house usually about 30 seconds (approaching sjo for landing). this aircraft did not go away after a minute and asked my wife if she agreed that it's taking a long time for it to go away. we finally decided to go outside to see what it was since the sound was still loud and seemed above us. we saw red triangular lights fly over my house in san jose about 9:45 pm on 10/7/2019 and seemed like it was a very large aircraft by the separation of the red lights possibly triangular. it seemed like it was flying very slow, low and in a north westerly direction. saw it for about 5 minutes until i heard another aircraft flying low and slow but had a white light. it was just as loud but didn't seem as large and seemed to fly in a westerly direction. i heard this for several minutes. i can see other aircraft in the distance with their red and greenish white lights blinking.