ZZZ
The abbreviation h.s. is from the Latin "hors somni" (at the hour of sleep) or bedtime.It can also be an abbreviation for half strength.
I suppose its "hora somni" (Latin), HS.
The medical abbreviation for bedtime is h.s. (hora somni).
The abbreviation for Megawatt hour is MWh.
qh is the medical abbreviation for every hour.
The abbreviation stands for Miles Per Hour.
hr
The abbreviation hr is used for the word hour.
KWH
17 dollars an hour
At one end you loose one hour of sleep. At the other end you gain one hour of sleep.
h= hour