system
Given the following post, respond as if you're commenting on Reddit:
human
[Minecraft] How come my friends report seeing the sun and moon pass overhead at the exact same time, even if they are far, far away and on a different longitude and latitude?
gpt
The physics of the Minecraft universe are complete different. First, the world is either completely and infinitely flat, or the world is a large cube. 

The flat theory is more likely, wherein the sun and sky are actually a separate entity from the physical world and land, so no matter where you are on the land you see the same "portal" to the "sky/sun dimension".