Index - I
| intervalFormat | Data.Time.Format.ISO8601 |
| isJulianLeapYear | Data.Time.Calendar.Julian |
| isLeapYear | Data.Time.Calendar.OrdinalDate, Data.Time.Calendar, Data.Time |
| ISO8601 | Data.Time.Format.ISO8601 |
| iso8601DateFormat | Data.Time.Format, Data.Time |
| iso8601Format | Data.Time.Format.ISO8601 |
| iso8601ParseM | Data.Time.Format.ISO8601 |
| iso8601Show | Data.Time.Format.ISO8601 |
| isoMakeTimeOfDayValid | Data.Time.Format.ISO8601 |