Determination of the day of the week ISO 8601. The day designated with 7 may also be counted as "0", by applying the arithmetic modulo 7, which calculates the remainder of a number after division by 7. Thus, the number 7 is treated as 0, 8 as 1, 9 as 2, 18 as 4 and so on. If Sunday is counted as day 1, then 7 days later (i.e. day 8) is also a Sunday, and day 18 is the same as day 4, which is a Wednesday since this falls three days after Sunday. The basic approach of nearly all of the methods to calculate the
Today Is Your Day the Canadian Hot 100. On the week ending July 2, 2011, "Today Is Your Day" also entered on the US "Billboard" Hot 100, at number 66 with 46,000 digital downloads (its sole week on the chart). This marked Twain's first entry on the "Billboard" Hot 100 chart since "Party for Two" (2004) spent its last week on the chart in February 2005. On the same week, "Today Is Your Day" entered at number 40 on the US Hot Country Songs chart, ranking Twain's fourth-highest debut. Two weeks later, on the week ending July 16, 2011, the track reached its peak