I came across this website about one guy's vacation to Mt. Rainier with 3 cesium clocks (yes, atomic clocks). He measured a difference in time at altitude compared to that at sealevel. As you get farther from the earth's core, there is a slight change in one's relative time (astronauts experience a heightened version of this). The difference of being at one mile above sealevel for two days? about 20-30 nanoseconds. Now, consider Sherpas in the Himalayas who live their entire lives at 20k feet, they probably have a second or two difference over the span of their life compared to someone at sealevel. Minuscule in real world terms, but a mind bender when you think about it.
Its relative , if the sherpas stay in there time zone , then there age is the same .
yes, relative to each other. Compared to ourselves, or even to miners who spend a third of their life below the surface they're time travelers. However, the same could be said about us from the Sherpas' perspective.
Good thing the guy didn't have an accident driving around with all that gear. The kids might have survived the crash, but not the marine batteries to the head.
It has to do with the distance from the gravitational field. But, another way to have this effect is to travel near the speed of light, lets say going from earth to some point one light year away and back, it will feel like 2 yrs in the spacecraft, but something like 20-30 years will pass on earth. Has something to do with relativistic speeds. Just saw it on "The Universe" on the History Channel this past month.
__________________
Obi-wan "You were the chosen one. It was said you'd destroy the Sith, not join them. Bring balance to the Force, not leave it in darkness."