 Complete the following phrase:  Slashes are a common calendar date separator used across many countries and by some standards such as the Common Log Format used by web servers. Depending on context, it may be in the form DayMonthYear, MonthDayYear, or YearMonthDay. If only two elements are present, they typically denote a day and month in some order. For example, a href911911a is a common American way of writing the date 11 September and has become shorthand for the 