Index - W
| wDays | Data.Time.Format, Data.Time |
| Wednesday | Data.Time.Calendar.WeekDate, Data.Time.Calendar, Data.Time |
| weekDateFormat | Data.Time.Format.ISO8601 |
| WeekOfYear | Data.Time.Calendar.OrdinalDate, Data.Time.Calendar.WeekDate |
| withTimeDesignator | Data.Time.Format.ISO8601 |
| withUTCDesignator | Data.Time.Format.ISO8601 |