also: あす · みょうにち
noun, adverb
The day after today. Used as both a noun and an adverb. あした is the default everyday reading; あす is slightly more formal; みょうにち is formal.
明日は休みです。
Tomorrow is a day off.
明日、映画を見に行きませんか。
Would you like to go see a movie tomorrow?
noun, adverb
Only with reading あす
Used with the reading あす to refer to the immediate future in a slightly abstract or poetic way. Not used with あした or みょうにち for this sense.
あすの日本を担う若者たち。
The young people who will carry Japan's near future.