nondisjunction - meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells.
What Date? is a simple, freeware date calculator for Windows. Enter a date and interval and press calculate to find any date in the future or past. What Date will recognize any date format which Windows can understand (date formats as set in Control Panel). I wrote this because many people emailed asking; Is there a simple way to find a date given a start date and interval?.
Ascension Day, the fortieth day of Easter, thus always a Thursday (5 May 2016). Pentecost, the fiftieth day of Easter, thus always a Sunday (15 May 2016). You can find the date of Easter Day in (almost) any year. You can learn how to calculate the date of Easter Day.