issues: 417666040

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
417666040 MDU6SXNzdWU0MTc2NjYwNDA= 2804 Error when oppening netcdf file with open_mfdataset 44284270 closed 0     3 2019-03-06T07:46:57Z 2019-03-06T23:14:26Z 2019-03-06T23:14:26Z NONE      

Code Sample, a copy-pastable example if possible

python dset = xr.open_mfdataset('/Users/mada0007/Desktop/Spi1_data/*.nc',autoclose=True) spi_all = dset['pr'][:,:,:] spi_lat = dset['lat'][:] spi_lon = dset['lon'][:]

this is my error message

```python-traceback Traceback (most recent call last): File "", line 1, in <module> File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/backends/api.py", line 637, in open_mfdataset datasets = [open_(p, **open_kwargs) for p in paths] File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/backends/api.py", line 344, in open_dataset ds = maybe_decode_store(store) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/backends/api.py", line 274, in maybe_decode_store drop_variables=drop_variables) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/conventions.py", line 461, in decode_cf decode_coords, drop_variables=drop_variables) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/conventions.py", line 394, in decode_cf_variables stack_char_dim=stack_char_dim) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/conventions.py", line 300, in decode_cf_variable var = coder.decode(var, name=name) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/coding/times.py", line 412, in decode dtype = _decode_cf_datetime_dtype(data, units, calendar) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/coding/times.py", line 131, in _decode_cf_datetime_dtype raise ValueError(msg) ValueError: unable to decode time units u'days since 0001-01-01' with calendar u'days since 0001-01-01'. Try opening your dataset with decode_times=False. Full traceback: Traceback (most recent call last): File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/coding/times.py", line 122, in _decode_cf_datetime_dtype result = decode_cf_datetime(example_value, units, calendar) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/coding/times.py", line 192, in decode_cf_datetime flat_num_dates.astype(np.float), units, calendar) File "/Users/mada0007/anaconda3/envs/Research_ass/lib/python2.7/site-packages/xarray/coding/times.py", line 92, in _decode_datetime_with_cftime only_use_cftime_datetimes=True)) File "cftime/_cftime.pyx", line 265, in cftime._cftime.num2date File "cftime/_cftime.pyx", line 730, in cftime._cftime.utime.init

ValueError: calendar must be one of ['standard', 'gregorian', 'proleptic_gregorian', 'noleap', 'julian', 'all_leap', '365_day', '366_day', '360_day'], got 'days since 0001-01-01'

```

Problem description

trying to open this netcdf files which was writtend by me, code not working at all expecting ext

Output of xr.show_versions()

INSTALLED VERSIONS ------------------ commit: None python: 2.7.15 | packaged by conda-forge | (default, Feb 27 2019, 20:44:16) [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] python-bits: 64 OS: Darwin OS-release: 18.2.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: None LOCALE: None.None libhdf5: 1.10.2 libnetcdf: 4.6.1 xarray: 0.11.3 pandas: 0.24.1 numpy: 1.16.2 scipy: 1.2.1 netCDF4: 1.4.2 pydap: None h5netcdf: None h5py: None Nio: None zarr: None cftime: 1.0.3.4 PseudonetCDF: None rasterio: None cfgrib: None iris: None bottleneck: None cyordereddict: None dask: 1.1.3 distributed: None matplotlib: 2.2.3 cartopy: 0.17.0 seaborn: None setuptools: 40.8.0 pip: 19.0.3 conda: None pytest: None IPython: None sphinx: None 
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   completed 13221727 issue

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