# Date histogram fixed interval
**URL:** https://discuss.elastic.co/t/date-histogram-fixed-interval/20451
**Category:** Elasticsearch
**Created:** [October 27, 2014, 6:18pm UTC](https://discuss.elastic.co/t/date-histogram-fixed-interval/20451 "2014-10-27T18:18:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@jnortey](https://discuss.elastic.co/u/jnortey)
#### Post date: [October 27, 2014, 6:18pm UTC](https://discuss.elastic.co/t/date-histogram-fixed-interval/20451/1 "2014-10-27T18:18:04Z")
Is it possible to specify a fixed interval for a date histogram
facet/aggregation? Here is what I mean by fixed:
Lets say that I created an aggregation that returned data for between a
certain time range. This could be for the last 24 hours, the last 30 days,
etc. Regardless of the time range, I would like to get exactly six buckets
of data regardless of the size of the time range.
So if the time range was for the last 24 hours, I would get a bucket for
each four hour period. If the time range were 30 days, I would get a bucket
for each 5 day period. Is it possible to specify something like this in the
date time histogram?
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### Author:  [@jpountz](https://discuss.elastic.co/u/jpountz)
#### Post date: [October 27, 2014, 11:42pm UTC](https://discuss.elastic.co/t/date-histogram-fixed-interval/20451/2 "2014-10-27T23:42:08Z")
Hi Jeremy,
It is not possible. One work-around could be to over request (for example
create per-minute buckets) and finally merge them to get the desired number
of buckets. I believe this is something that could be achieved through
[Reducers - Post processing of aggregation results · Issue #8110 · elastic/elasticsearch · GitHub](https://github.com/elasticsearch/elasticsearch/issues/8110).
Another option could be to run two requests: a first one to figure the
min/max timestamps and a second one with an interval that would generate
the desired number of buckets.
On Mon, Oct 27, 2014 at 7:18 PM, jnortey [jeremy.nortey@gmail.com](mailto:jeremy.nortey@gmail.com) wrote:
> Is it possible to specify a fixed interval for a date histogram
> facet/aggregation? Here is what I mean by fixed:
>
> Lets say that I created an aggregation that returned data for between a
> certain time range. This could be for the last 24 hours, the last 30 days,
> etc. Regardless of the time range, I would like to get exactly six buckets
> of data regardless of the size of the time range.
>
> So if the time range was for the last 24 hours, I would get a bucket for
> each four hour period. If the time range were 30 days, I would get a bucket
> for each 5 day period. Is it possible to specify something like this in the
> date time histogram?
>
> --
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> "elasticsearch" group.
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> [https://groups.google.com/d/msgid/elasticsearch/6c0c6fcd-9f4e-4aa3-91cc-5a586f88811e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/6c0c6fcd-9f4e-4aa3-91cc-5a586f88811e%40googlegroups.com?utm_medium=email&utm_source=footer)
> .
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Adrien Grand
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 12:53am UTC](https://discuss.elastic.co/t/date-histogram-fixed-interval/20451/3 "2017-07-06T00:53:36Z")