I was watching this video from Neil deGrasse Tyson where he explains just how rich Bill Gates is (it's a fun video to watch, check it out here: http://9gag.tv/p/a5XWnk/watch-neil-degrasse-tyson-explain-how-rich-bill-gates-is). In it, he talks about how old you will be when you've reached your billionth second (it's close to 32 years, BTW), and mentioned having taken the time to compute this, and that someone will probably write an app to do this.
So of course, I said "that should be easy enough for PowerShell!". It was. Ridiculously easy, in fact. So, for some fun, you, too, can quickly calculate when you can celebrate your billionth second! (I used some sample data not actually linked to anyone's birthday that I know)
Note that the time is in 24 hour format (though you can use 12 hour format by adding AM or PM to the end), and that the date is the US standard format, so if your localization is different, you'll probably need to use your localized standard.
Whoever has the above birthday will celebrate their 1 billionth second on Saturday, April 24, 2021 at 7:41:40 PM.