issue_comments: 787065391

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https://github.com/pydata/xarray/issues/2437#issuecomment-787065391 https://api.github.com/repos/pydata/xarray/issues/2437 787065391 MDEyOklzc3VlQ29tbWVudDc4NzA2NTM5MQ== 6628425 2021-02-27T12:27:41Z 2021-02-27T12:55:36Z MEMBER

Thanks @keewis.

@hafez-ahmad by Julian date do you mean that the time coordinate represents "days since -4713-01-01T12:00:00" in a Julian calendar?

Once we know the units (expressed as "{time_unit} since {reference_date}") and the calendar of the time coordinate, we can convert it to datetime objects via something like the following: ```python

units = "days since -4713-01-01T12:00:00" calendar = "julian" ds["time"] = ds.time.assign_attrs(units=units, calendar=calendar) ds = xr.decode_cf(ds) ```

I'll admit though, with the values in your dataset, this assumption produces dates like cftime.DatetimeJulian(-4527, 1, 30, 12, 0, 0, 0), which feel unlikely to be correct. Perhaps you are using a different reference date?

 
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