[Paul]

Original von spartan4ever
aber wie lange dauert so ein Jahr überhaupt???

12 Monate, 52 Wochen, ca 365,25 Tage, ca 8766 Stunden, ca 525960 Minuten und ein etwa 31557600 Sekunden.

Original von spartan4ever
Es wird nämlich nicht gesagt das es sich um Erdjahre handelt.

Doch.
http://halosm.bungie.org/story/staten083106.html

HSP: When did the Forerunner die off - in human years?

JS: Inscrutable alien beings with problematic ethics never die... they just fade away. But if what you're asking is: when did the Forerunner take their "Great Journey," that would be about 100,000 years ago - around the time our Homo Sapien ancestors decided to migrate out of Africa. Mind you, that's a hotly debated paleontological theory.