How can I convert two date and time columns of this type:
Date Time
1/01/1990 1055
2/01/1990 1055
3/01/1990 1055
4/01/1990 1729
5/01/1990 1729
into a single datetime column (e.g format='%H:%M:%S %Y-%m-%d') using dask map_partitions ?