| DayOfEpoch | Returns the Inner Drive epochal day, which is the whole day number counting from 2001-01-01T00:00:00+0000 = 0. |
| FromJulianDay | Returns a DateTimeOffset given a particular Julian day number. |
| MonthOfEpoch | Returns the Inner Drive epochal month, which is the whole month number counting from January 2001 = 0. |
| MonthsBetween | Returns the total number of months between two DateTimeOffset values. |
| ParseTime | Parses textual time input into a DateTime. |
| QuarterOfYear | Determines which calendar quarter this DateTimeOffset is in. |
| ToJulianDay | Returns the Julian day number for a given DateTimeOffset. |
| WeekOfEpoch | Returns the Inner Drive epochal week, which is the whole week number counting from 2001-01-01T00:00:00+0000 = 0. |
| WeekOfYear | Returns the week number of this DateTimeOffset. |
| YearsBetween | Returns the total number of years between this DateTimeOffset and another DateTimeOffset. |