What has time taught us

It's eight o' somewhere or
Perhaps 5pm as drinkers
Share. Grab a gin, mix in a
Tonic. Salud. But time does
Not just mark the rotations
For cocktail hour or bedtime 
If you're sleepy. It is a valued
Tool when you've wanted to
Knock off work or plant crops 
It's junior only to a season's 
Measure but more intimate 
And personal in its breadth.
You know that it's 5 o'clock 
Somewhere. Raise a glass
Or just dim the lights and
Head home. Closing time.