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Created page with "-- Date functions for use by other modules. -- I18N and time zones are not supported. local MINUS = '−' -- Unicode U+2212 MINUS SIGN local floor = math.floor local Date, DateDiff, diffmt -- forward declarations local uniq = { 'unique identifier' } local function is_date(t) -- The system used to make a date read-only means there is no unique -- metatable that is conveniently accessible to check. return type(t) == 'table' and t._id == uniq end local function is_..."