CornerClock

CornerClock is a small program that adds a tiny clock just to the left of the Apple Menu icon in your menu bar. When you place the cursor over the program it will display the current date for two seconds, then change back to displaying the time. CornerClock includes several customizable options that let you control its appearance, color, and chime. At default settings it will play a grandfather clock chime on the hour. Version 2.2 adds a feature for specifying optional chimes on the hour, 00:15, 00:30, and 00:45. You can also choose an optional tick sound for every minute.

Requirements:

Mac OS 7.x/8.x/9.x