The Complete Guide to Interpreting Your Dreams

by Stearn Robinson - Tom Corbett
A dream in which you heard a clock strike or were otherwise made aware of the hour suggests that you are exerting your energy in the right direction; but to dream of sand running through an hourglass is a warning against wasting your time in meaningless pursuits.

New American Dream Dictionary

by Joan Seaman - Tom Philbin
1. Worry over time, promptness.

2. Feelings of loss, often regarding relationships.

3. Secrets revealed.