I am working with data in `R` that I imported form `excel` format. 

I have a column (`isas1_3b`) in the dataframe (`LPAv1.1.1`) which is in the `character` format. Upon importing, the dates have changed from the format dd/mm/yy, to days (e.g., 41268). 

I have tried to convert this as below: 

```
as.Date(LPAv1.1.1$isas1_3b, origin = "1899-12-30")

```

However, I get the following error: 

> 
> Error in charToDate(x) : character string is not in a standard unambiguous format
>  4. stop("character string is not in a standard unambiguous format")
>  3. charToDate(x)
>  2. as.Date.character(LPAv1.1.1$isas1\_3b, origin = "1899-12-30")
>  1. as.Date(LPAv1.1.1$isas1\_3b, origin = "1899-12-30")
> 
> 
> 

I'm not sure what I am doing wrong. After numerous searches, the above conversion is what was recommended. 

I should also add, that there are two other date columns in the original `excel` document. But they have both been read in as `'POSIXct''POSIXt'`. 

Other info that may be relevant: 

```
macOS 13.13.3 R 3.3.3 RStudio 1.1.419

```

Can someone please help resolve this issue... I am assuming it is something that I am doing. Please let me know if you need any more info.