Display Conditional Content based on time

Block content is displayed only at certain times. Example: From 0:00 at night to 11:59 at noon, a user is addressed as "Good morning Mr. Mustermann". From 12:00 a.m. to 5:59 p.m., a user is addressed as "Good afternoon Mr. Mustermann". From 6:00 p.m. to 11:59 p.m., a user is addressed as "Good evening Mr. Mustermann".