yyyy-mm-ddon 2017-09-25 I will determine that you could well die before your 32nd birthday and thus, now that you have passed 2016-08-04, you should repost that with all four remaining dates as "might". Remember, you're going to die someday and your most authentic self comes from being-towards-death in anticipatory resoluteness.
on 2016-08-04 I turn 16
on 2032-08-04 I turn 32
on 2048-08-04 I turn 48
on 2064-08-04 I turn 64
on 2128-08-04 I might turn 128