Export ES indices based on time

Is there a way to export ES indices from a time range? i.e. 1:00 PM - 2:00PM? I want to be able to export this range and send it another ES instance.

There's no built-in mechanism for this. Unless there's an existing program that can do this (Elasticsearch Knapsack comes to mind) you'll have to write something yourself. It should be quite easy with e.g. elasticsearch-py.

Using the python client there is an efficient "reindex" api[1] that can take a query as criteria to subset the data

[1] https://elasticsearch-py.readthedocs.org/en/master/helpers.html#elasticsearch.helpers.reindex

Thank you guys will look into it!

You can also use Logstash for this via this method.
There is also snapshot & restore.