# Date list functions

These functions help you manipulate lists of dates.

## FirstDate

Returns the first date in the list of dates.

Expression

```apteco
FirstDate (date1, date2,...)
```

For example:

- `FirstDate([Date1], "20060101")`
- `FirstDate([Date1], [Date2], [Date3])`

> [!NOTE]
>
> Dates can also be included as yyyymmdd.

## LastDate

Returns the last date in the list of dates.

Expression

```apteco
LastDate (date1, date2,...)
```

For example:

- `LastDate([Date1], "20060101")`
- `LastDate([Date1], [Date2], [Date3])`

> [!NOTE]
>
> Dates can also be included as yyyymmdd.