Everything is Cyclic

A few years ago, I had breakfast at the same time in the morning twice. First in Osaka (大阪), then, having crossed the international date line, in Honolulu.

I recently had a similar experience. I checked in for a two hour flight one day. The next day, I went to the same airport and checked in again for the same flight.

Phileas Fogg gained one day by crossing the date line. Could he have saved a day by checking in for the same flight twice in a row as well?

What is more likely to make us younger? What is more likely to make us more experienced?