It just comes once in a while. Sometimes it presents itself, sometimes you have to look for it.Just like this month. August 2010 has 5 Sundays, 5 Mondays and 5 Tuesdays. This month's arrangement was said to just happen every 823 months. I'm not so sure since I don't have that much free time to count the number of days in a month. Let's just leave it to the pros.
Opportunity is defined as:
a possibility due to a favorable combination of circumstances;
