three hours
Examples
Don't sleep too much. If you sleep three hours less each night for a year, you will have an extra month and a half to succeed in.
Three hours a day will produce as much as a man ought to write.
Better three hours too soon than a minute too late.
They spent all week saving pennies and went out Saturdays to spend fifty bucks in three hours.
Thank you, dear God, for this good life and forgive us if we do not love it enough. Thank you for the rain. And for the chance to wake up in three hours and go fishing: I thank you for that now, because I won't feel so thankful then.
I listen to jazz about three hours a day. I love Louis Armstrong.