Lower than nanos and not day divisible should raise
Lower than nanos and not day divisible should raise

jcrist/dask,blaze/dask,dask/dask,ssanderson/dask,mraspaud/dask,ssanderson/dask,mikegraham/dask,ContinuumIO/dask,jakirkham/dask,PhE/dask,mrocklin/dask,vikhyat/dask,clarkfitzg/dask,PhE/dask,pombredanne/dask,cowlicks/dask,dask/dask,mraspaud/dask,blaze/dask,jcrist/dask,cpcloud/dask,mrocklin/dask,ContinuumIO/dask,chrisbarber/dask,pombredanne/dask,gameduell/dask,vikhyat/dask,clarkfitzg/dask,jakirkham/dask