Dear John > I have prototyped similar functionality in the CDM, documented here: > > http://www.unidata.ucar.edu/software/netcdf-java/CDM/CalendarDateTime.html
Thanks for this. I recall the earlier discussion and I think what you have implemented would be a good extension to CF, namely * Optional prefix "calendar" to the time-units means the corresponding component of time is manipulated. You show only years and months. Do you also accept the unproblematic units of days, hours, minutes and seconds with "calendar" prefixed? Do you allow the SI prefixes to these units? * With calendar, only integer numbers of units are allowed. Are negative numbers allowed? * Invalid dates caused by adding months and years are decremented in whole days until a valid date is reached. Best wishes Jonathan _______________________________________________ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata