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/6191#issuecomment-1133765720,https://api.github.com/repos/pydata/xarray/issues/6191,1133765720,IC_kwDOAMm_X85Dk-RY,5635139,2022-05-21T20:43:08Z,2022-05-21T20:43:08Z,MEMBER,"I sorted out my M1 python installation and can reproduce:
```
In [21]: ds_r.time
Out[21]:
<xarray.DataArray 'time' (nt: 10)>
array(['2022-01-01T00:00:00.000000000', '2022-01-02T00:00:00.000000000',
       '2022-01-03T00:00:00.000000000', '2022-01-04T00:00:00.000000000',
       '2022-01-01T00:00:00.000000000', '2022-01-06T00:00:00.000000000',  # Note the first value on this line!
       '2022-01-07T00:00:00.000000000', '2022-01-08T00:00:00.000000000',
       '2022-01-09T00:00:00.000000000', '2022-01-10T00:00:00.000000000'],
      dtype='datetime64[ns]')
Dimensions without coordinates: nt
```

 It's quite surprising we get `'2022-01-01T00:00:00.000000000'` rather than `NaT` — why the beginning of the year?!

I suspect it's not directly an xarray issue given Xarray is only python code, and python code does not directly branch by CPU. 
I've frequently had issues like this where it's difficult to understand which library is responsible, I'd welcome any more investigation here.
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1114351614
https://github.com/pydata/xarray/issues/6191#issuecomment-1021889497,https://api.github.com/repos/pydata/xarray/issues/6191,1021889497,IC_kwDOAMm_X8486MvZ,5635139,2022-01-26T05:53:43Z,2022-01-26T05:53:43Z,MEMBER,"I tried reproducing on an M1 Mac, but my install of python seems to report that it's on an x86_64 (`version='Darwin Kernel Version 21.0.1: Tue Sep 14 20:56:24 PDT 2021
; root:xnu-8019.30.61~4/RELEASE_ARM64_T6000', machine='x86_64'`). It didn't reproduce, unsurprisingly.

Does uninstalling `netCDF4` help? That would isolate it to that library and its dependencies.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1114351614
https://github.com/pydata/xarray/issues/6191#issuecomment-1021609794,https://api.github.com/repos/pydata/xarray/issues/6191,1021609794,IC_kwDOAMm_X8485IdC,5635139,2022-01-25T21:08:02Z,2022-01-25T21:08:02Z,MEMBER,"Thanks @philippemiron .

My guess is that this is an issue with an underlying library, since xarray doesn't generally do these operations in its code. Do you know if there are any similar issues in libnetcdf or netCDF4?

(Others know more than me about these libraries, so please feel free to interject)","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1114351614