| AddYrs | Adds a Floating Point amount of Years to a Given Date/Time. |
| AdjustDateYear | Adjusts the date so that it has the Year specified. |
| AgeAtDate | Returns the Age (in years) of a "person" given their Date of Birth (DOB) and the Date of Reference (DT). |
| AgeAtDateInMonths | Returns the Age (in months) of a "person" given their Date of Birth (DOB) and the Date of Reference (DT). |
| Date2Year | Returns the Year from a given date/time. |
| DatesInSameYear | Returns true if both DateTimes refer to the same Year. |
| DayOfYear | Returns the Day Number in the Year represented by the given Date. |
| DaysInYear | Returns the number of days in the Year represented by the given Date. |
| DaysLeftInThisYear | Returns the number of days left in this Year. |
| DaysLeftInYear | Returns the number of days left in the Year represented by the given Date. |
| GetChristmasDay | Returns Christmas Day, for a given Year. |
| GetEasterSunday | Returns the Date of Easter Sunday for given Year - based on current Calendar. |
| GetEpact | Return the Epact, which is a measure of the age of the moon (ie the number of days that have passed since an "official" new moon) on a particular date. |
| GetFirstDayOfYear | Returns First Day of the Year, for a given Year. |
| GetFirstMondayOfYear | Returns First Monday of the Year, for a given Year. |
| GetFirstSundayOfYear | Returns First Sunday of the Year, for a given Year. |
| GetGoldenNumber | Returns the GoldenNumber for a given Year. |
| GetGoodFriday | Returns the Date of Good Friday for given Year - based on current Calendar. |
| GetLastDayOfYear | Returns Last Day of the Year, for a given Year. |
| IsFirstDayOfYear | Returns true if the date is the first day of a Year. |
| IsFirstDayOfYearNow | Returns true if today is the first day of a Year. |
| IsLastDayOfYear | Returns true if the date is the last day of a Year. |
| IsLastDayOfYearNow | Returns true if today is the last day of a Year. |
| IsLeapYear | Is given Year a Leap Year. |
| ISOWeeksInYear | Most years have 52 weeks, but years that start on a Thursday and leap years that start on a Wednesday (or Thursday) have 53 weeks. |
| OptDayOfYear | Returns the Day Number in the Year represented by the given Date. |
| OptDaysLeftInThisYear | Returns the number of days left in this Year. |
| OptDaysLeftInYear | Returns the number of days left in the Year represented by the given Date. |
| OptThisDayOfYear | Returns the Day Number in this Year represented by today. |
| OptThisYear | Returns the current Year - from Today's Date. |
| SubtractYrs | Subtracts a Floating Point amount of Years from a Given Date/Time. |
| ThisDayOfYear | Returns the Day Number in this Year represented by today. |
| ThisYear | Returns the current Year - from Today's Date. |