dates are parsed wrong or not output properly

[mlamherr]

For data with date-times YYYYMMDDTHHZ,

1. category mode just outputs year, month, date -- hour information is not output, and only the hour=0 data are output
2. in series mode, what is output is YYYY MMDDTHHZ DD, e.g., 2018 0731T10Z 31; the more useful output is YYYY MM DD HH