> For the complete documentation index, see [llms.txt](https://docs.tabula.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tabula.io/data-transformation/formulas/date-and-time-functions/dayname.md).

# DayName

Gets the day-of-week name of a date \ datetime

```mathematica
DayName(DateFromParts(2022,1,10)) → "Sunday"
DayName(column1) → "Wednesday"
```

#### Inputs

`DayName(dateTime)`

* `dateTime` - Date, time, or datetime value