time  = Time.now.to_i % (36*60)
loop do
hour, rest = time.divmod(90)
min        = rest / 1.5
print "%02d:%02d\n" % [hour, min]
time += 1.5
sleep 1.5
end

1. トップ
2. game
3. ET

1. トップ
2. script
3. ET