Thread:6teen/@comment-11883116-20160313222048/@comment-11883116-20160314003841

No, the info about their ages was confirmed by the creators.

I believe they're sometimes saying this from the viewers' perspective. I mean, Justin says "last year" and "this year" in the exclusive confessional from Monster Cash, even though the break between TDI and TDA was only two days.

Also, Bridgette in Hawaiian Style mentions being separated from Geoff for 46 days (if I recall correctly), implying this was the time between this and last Aftermath, which I'm totally not bying either. Sometimes, it's just a goof. Also and effect of "depends on the writer" issue.