time hangs heavy - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Also, time hangs heavy on one's hands. Time passes slowly, as in She adjusted quite well to the nursing home, except that she says time hangs heavy on her hands. This metaphoric term, first recorded in the late 1760s, likens the passage of time to a burdensome weight.