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
941810767,MDU6SXNzdWU5NDE4MTA3Njc=,5594,xarray does not seem to work with timezone aware indexes,29140541,open,0,,,3,2021-07-12T08:34:23Z,2021-08-14T17:39:44Z,,NONE,,,,"Using the following code, the created index is not a time index but has object type:
```python
import numpy as np
import pandas as pd
import xarray as xr

data = xr.DataArray(np.random.random(5), dims=['time'], coords={'time': pd.date_range(""2000-01-01"", periods=5).tz_localize('UTC')})
print(data.time)
```
This can severely limit the practicality of time indexes. It also means that methods such as resample won't work.

Environment:
I use xarray==0.18.2 with ubuntu","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/5594/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,issue