I accept Shoos implementation only with the conditions 1) No multiplication, division and remainder operations are allowed. Tango used these operations for date calculation in an original way. All similar uses are forbidden. 2) Also it is not allowed to implement routines for operations at (1). That would be obviously a thinly veiled attempt at stealing Tango code. 3) No use of the words date, time, and calendar are allowed in the code or the documentation. These words were used creatively by Tango. They cannot be stolen. I am sure these requirements are reasonable
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