For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some ‘organic element’ since I couldn’t accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.
Albeit arbitrary… if it’s globally recognized that each new day begins as the sun crests the international date line, and the sun indisputably rises from the East, why would it not make sense?
Wait until you find out that some places breach that line (in addition to it being wobbly to begin with) which is we have timezones greater than +12 or -12. I hate timezones. With a passion. Signed: a programmer.
or Decimal Internet Time, which is way easier to do calculations with, easier to distinguish from local times, and is less eurocentric
