Elasticsearch-curator - Deleting indices which are older than an hour

I am having some indices in elasticsearch whose naming format is elk-console-YYYY-MM-DDtHH. For example:-

elk-console-2016-03-30t14
elk-console-2016-03-30t16

I want to delete all indices which are more than 1 hour old using curator. So I tried executing the below command:-

curator --host localhost delete indices --older-than 1 --time-unit hours --timestring '%Y-%m-%dt%H'

But it is giving me the following ouput:-

2016-04-22 16:27:36,049 INFO      Job starting: delete indices
2016-04-22 16:27:36,058 INFO      Pruning Kibana-related indices to prevent accidental deletion.
2016-04-22 16:27:36,058 WARNING   No indices matched provided args: {'regex': None, 'index': (), 'suffix': None, 'newer_than': None, 'closed_only': False, 'prefix': None, 'time_unit': 'hours', 'timestring': u'%Y-%m-%dt%H', 'exclude': (), 'older_than': 1, 'all_indices': False}
No indices matched provided args: {'regex': None, 'index': (), 'suffix': None, 'newer_than': None, 'closed_only': False, 'prefix': None, 'time_unit': 'hours', 'timestring': u'%Y-%m-%dt%H', 'exclude': (), 'older_than': 1, 'all_indices': False}

Can some one please help me what timestring format should I use in my case?

To close this out: https://github.com/elastic/curator/pull/603 fixed the issue.