a long time
 

* 1.blue moon

English Related Words* 12 hour time format

* 12-hour time format

* 24 hour time format

* 24-hour time format

* a bad time

* a hard time

* a little kindness goes a long way

* a long face

* a long haul

* a long shot

* a long slog

* a long time ago

* a long way off

* a long way to hoe

* a long while ago