Crystal Birthday

when a persons' birthday falls on the exact weekday he/she was born. This will happen every 5-6-11-6yrs in a cycle repeating after the last 6. Unless a heap year is in your birthday cycle.

Kelly was born on a Wednesday August 17, 1994.
This year, August 17, 2016 her birthday will fall on a Wednesday which is the same weekday she was born. Therefore, it's her Crystal Birthday.

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