It can find the point in time when a given time occurs, but can also determine whether a given time is occurring in the future or in the past, or even determines whether the time/date is valid.
You can limit results to only show certain dates, days, times or duration, for example you can tell the software whether to ignore weekends and holidays, what year to compare dates to and so forth.
If you want to find the specific date, number of days etc, the 50e0806aeb broouric