there is no date having 1970 in my data frame in the date colum but when i plot it shows 1970

General
2

I think we need to see more of your code code and some sample data. See
FAQ Asking Questions

A handy way to supply some sample data is the dput() function. In the case of a large dataset something like dput(head(mydata, 100)) should supply the data we need. Just do dput(mydata) where mydata is your data. Copy the output and paste it here between
```

```

Why are you doing this?

bd<-bd%>%mutate(date=as.character(date))