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/pull/3543#issuecomment-562884213,https://api.github.com/repos/pydata/xarray/issues/3543,562884213,MDEyOklzc3VlQ29tbWVudDU2Mjg4NDIxMw==,2448579,2019-12-07T20:37:53Z,2019-12-07T20:37:53Z,MEMBER,"test failure is #3603 . Thanks @spencerkclark for the fix, @TomNicholas for reviewing and @mathause for testing!","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,523878167
https://github.com/pydata/xarray/pull/3543#issuecomment-562857806,https://api.github.com/repos/pydata/xarray/issues/3543,562857806,MDEyOklzc3VlQ29tbWVudDU2Mjg1NzgwNg==,35968931,2019-12-07T14:54:49Z,2019-12-07T14:54:49Z,MEMBER,I think this should be fine...,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,523878167
https://github.com/pydata/xarray/pull/3543#issuecomment-557523107,https://api.github.com/repos/pydata/xarray/issues/3543,557523107,MDEyOklzc3VlQ29tbWVudDU1NzUyMzEwNw==,6628425,2019-11-22T13:02:06Z,2019-11-22T13:02:06Z,MEMBER,"@TomNicholas I'm comforted by the fact that this does not seem to break any existing tests, but does it look OK to you?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,523878167
https://github.com/pydata/xarray/pull/3543#issuecomment-557203189,https://api.github.com/repos/pydata/xarray/issues/3543,557203189,MDEyOklzc3VlQ29tbWVudDU1NzIwMzE4OQ==,10194086,2019-11-21T18:01:55Z,2019-11-21T18:01:55Z,MEMBER,"Thanks. Just for reference, the current implementation leads to a series of CFTimeIndex (which fails when subtracting one from the other):

``` python
pd.Index([index.take([0]) for index in indexes]).to_series()

>>> [4500-12-31 00:00:00]    CFTimeIndex([4500-12-31 00:00:00], dtype='obje...
>>> [4600-12-31 00:00:00]    CFTimeIndex([4600-12-31 00:00:00], dtype='obje...
>>> [5100-12-31 00:00:00]    CFTimeIndex([5100-12-31 00:00:00], dtype='obje...
>>> dtype: object
```
The implementation in this PR leads to a series of CFTime (and subtracting one from the other works):

``` python
pd.Index([index[0] for index in indexes]).to_series()

>>> 4500-12-31 00:00:00    4500-12-31 00:00:00
>>> 4600-12-31 00:00:00    4600-12-31 00:00:00
>>> 5100-12-31 00:00:00    5100-12-31 00:00:00
>>> dtype: object
```

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