This vocabulary provides support for doing calculations involving time and dates.
| Function | Stack | Used For |
|---|---|---|
| MINUTES/WEEK | -n | Number of minutes in a week |
| MINUTES/DAY | -n | Number of minutes in a day |
| MINUTES/HOUR | -n | Number of minutes in an hour |
| HOURS/DAY | -n | Number of hours in a day |
| DAYS/WEEK | -n | Number of days in a week |
| DAYS/YEAR | -n | Number of days in a typical year |
| WEEKS/YEAR | -n | Number of weeks in a year |
| SECONDS/MINUTE | -n | Number of seconds in a minute |
| SECONDS/HOUR | -n | Number of seconds in an hour |
| SECONDS/DAY | -n | Number of seconds in a day |
| dayToName | n-$ | Convert the number of a day to a three letter abbreviation |
| daysPerMonth | m-n | Return the number of days in a given month |
| secondsPerMonth | m-n | Return the number of seconds in a given month |
| isLeapYear? | y-f | Return true (-1) if the year is a leap year or false (0) otherwise |
| secondsPerYear | y-n | Return the number of seconds in a given year |
| toJulian | dmy-j | Convert a date into a Julian day |
| toDayOfWeek | dmy-n | Convert a date to the numeric day of the week |