>>1907661
just to help you keep track of what day it is since there's no calendar
it doesn't say this anywhere in-game, but the weather is (mostly) on a set cycle on every world, so for example it will always rain on day 6 (in the meadows). i think there's a site that displays what the weather will be like on any given day, and what direction the wind will blow

tl;dr it's just the date, you don't need to rush
>>1907888
nice digits hostman