system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: The science behind "Red skies at night: sailors delight. Red skies in morning: sailors take warning."
gpt
It wholly depends on where you live, in tropical regions this makes no sense at all but in temperate climates weather systems move predominantly west to east.

Red skies are usually caused by sunlight reflecting off the underside of cloud cover. If there's red sky in the morning, the sun is shining from the east hitting cloud cover coming from the west, i.e. there are clouds on the way. Red sky in the evening is exactly the opposite, clear skies to the west and clouds departing to the east.