A harnro is a passage of time based on proeathan time keeping. It is a standard passage of medium measured time that has no human time measurement equivalent. A harnro is approximately ten days in length. Because proeathans measure time differently and don't use the moon to create their calendar it looks very different from humans'. A harnro is not a proeathan week. There are no weeks in the proeathan calendar. There are no days of a week in a proeathan calendar. Each day of a harnro is numbered one to ten and that harnro has a name within the year. They are more equivalent to months than weeks but there are significantly more of them.