html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/4183#issuecomment-651851046,https://api.github.com/repos/pydata/xarray/issues/4183,651851046,MDEyOklzc3VlQ29tbWVudDY1MTg1MTA0Ng==,3460034,2020-06-30T15:01:27Z,2020-06-30T15:01:27Z,CONTRIBUTOR,"> We would absolutely accept a pull request for this, but I'm not 100% sure that nanoseconds are valid per CF conventions. CF conventions references udunits.dat, which as far as I can tell includes no units smaller than 1 second:
> https://www.unidata.ucar.edu/software/udunits/udunits-1/udunits.txt

Nanoseconds (and seconds with any other SI prefix from yocto to yotta) are indeed valid in the CF conventions. For reference, there is [this table](http://cfconventions.org/Data/cf-conventions/cf-conventions-1.8/cf-conventions.html#table-supported-units) in v1.8 of the conventions, as well as the [SI prefix](https://www.unidata.ucar.edu/software/udunits/udunits-current/udunits/udunits2-prefixes.xml) and [SI base unit](https://www.unidata.ucar.edu/software/udunits/udunits-current/udunits/udunits2-base.xml) databases of UDUNITS.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,646038170