With Pandas DataFrames, DateTimes are giving errors

In my dataframe, I have a line ```df['Time'] = pandas.to_datetime(df['Time'])```

but when i run

```
bdf = bcpy.DataFrame(df)
bdf.to_sql(sql_table, use_existing_sql_table=True)
```

and I get 
```
SQLState = 22008, NativeError = 0
Error = [Microsoft][ODBC Driver 17 for SQL Server]Invalid date format
```