Query Between Specific Times (2 replies)

I'm very new to MySQL and I'm trying to query between 4 specific times each day;

1. Where >= PREVIOUS DAY 15:00:00 and < TODAY 11:00:00
OR
2. Where >= TODAY 11:00:00 and < TODAY 15:00:00

Is it even possible to use the NOW() plus a specific time? This would query each day. If anyone can helps, that would be great!