I signed up for STEEM in late December of 2017. It took a few days, as I recall, to get approved, so my official account date is December 30, 2017. It took a few days, thanks to the holidays, to get going, so my first official acts on STEEM didn't take place until January 1, 2018. I think I started following a few accounts and maybe upvoted. Can't remember if I commented or not. My first post didn't happen until a few days later.

I guess that makes me 473 days old on STEEM.

My current SP sits at just over 6,700, making me a dolphin, a threshold I passed back in late November of last year. Just over 4,500 SP is through investing. The rest I've earned through rewards for posting, commenting, curating, along with winning some contest prizes and receiving some rewards from bounties.