Update!
Yesterday (July 1, 2019) Ty Simpkins said that if Harley Keener got snapped(™), he would be around 17. However, if he didn’t, then he would be 21-22.
My guess is that Harley did get snapped(™) during the decimation and then blipped back. This would make him older than Peter Parker.
Ty was doing the math on his Instagram Live :))










