Because Uranus moves so slowly, those born more or less in the same period will have the same or similar situation. A person who has, for example, Venus in the area of that Uranus, will find this aspect with all those born around that time. Another example, my personal chart, I have Saturn in late Saturn and a Leo ascendent. About a year or so after my birth that Saturn was on my ascendent. So, I don't tend to have a lot of friends or close relationships with those born about one year after me, they tend to tone down my ascendent because their Saturn is there. Those with other aspects that soften this effect are the ones that are easier for me to be friends with. So, in this sense it becomes generational.