# DateHistogram not working as expected
**URL:** https://discuss.elastic.co/t/datehistogram-not-working-as-expected/185602
**Category:** Elasticsearch
**Created:** [June 13, 2019, 10:02am UTC](https://discuss.elastic.co/t/datehistogram-not-working-as-expected/185602 "2019-06-13T10:02:11Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@umeshmishra099](https://discuss.elastic.co/u/umeshmishra099)
#### Post date: [June 13, 2019, 10:02am UTC](https://discuss.elastic.co/t/datehistogram-not-working-as-expected/185602/1 "2019-06-13T10:02:11Z")
Mapping:
```auto
{
"test_2e311eff-97c0-4270-b254-0c43cd5f2acc": {
"mappings": {
"test_2e311eff-97c0-4270-b254-0c43cd5f2acc_type": {
"properties": {
"2e311eff-97c0-4270-b254-0c43cd5f2accTableLevelStatsFieldInternalRule_Completeness": {
"type": "integer"
},
"_testile_row_id": {
"type": "keyword"
},
"date22": {
"type": "date",
"format": "yyyy-MM-dd||yyyy-MM-dd'T'HH:mm:ss||yyyy-MM-dd HH:mm:ss||yyyy-MM-dd'T'HH:mm:ss.SSS'Z'||HH:mm:ss||HH:mm:ss.SSS||date_optional_time||epoch_millis"
},
"datetime22": {
"type": "date",
"format": "yyyy-MM-dd||yyyy-MM-dd'T'HH:mm:ss||yyyy-MM-dd HH:mm:ss||yyyy-MM-dd'T'HH:mm:ss.SSS'Z'||HH:mm:ss||HH:mm:ss.SSS||date_optional_time||epoch_millis"
},
"time22": {
"type": "date",
"format": "yyyy-MM-dd||yyyy-MM-dd'T'HH:mm:ss||yyyy-MM-dd HH:mm:ss||yyyy-MM-dd'T'HH:mm:ss.SSS'Z'||HH:mm:ss||HH:mm:ss.SSS||date_optional_time||epoch_millis"
}
}
}
}
}
}
```
Data in index
```auto
{
"_testile_row_id": "1",
"time22": "10:00:00",
"datetime22": "2017-09-01T10:00:00"
}
},
{
"_index": "test_2e311eff-97c0-4270-b254-0c43cd5f2acc",
"_type": "test_2e311eff-97c0-4270-b254-0c43cd5f2acc_type",
"_id": "9ZoLUGsBn7EFIldnql5B",
"_score": 1,
"_source": {
"_testile_row_id": "2",
"time22": "11:09:00",
"datetime22": "2017-09-02T22:00:00",
"date22": null
}
},
{
"_index": "test_2e311eff-97c0-4270-b254-0c43cd5f2acc",
"_type": "test_2e311eff-97c0-4270-b254-0c43cd5f2acc_type",
"_id": "9poLUGsBn7EFIldnql5B",
"_score": 1,
"_source": {
"_testile_row_id": "3",
"time22": "03:09:00",
"datetime22": "2017-09-02T10:00:00",
"date22": "2016-09-01"
}
},
{
"_index": "test_2e311eff-97c0-4270-b254-0c43cd5f2acc",
"_type": "test_2e311eff-97c0-4270-b254-0c43cd5f2acc_type",
"_id": "95oLUGsBn7EFIldnql5B",
"_score": 1,
"_source": {
"_testile_row_id": "4",
"time22": "15:09:00",
"datetime22": null,
"date22": "2016-09-01"
}
}
]
}
}
```
Date histogram aggregation query:
```auto
GET test_2e311eff-97c0-4270-b254-0c43cd5f2acc/_search
{
"aggs": {
"Histogram": {
"date_histogram": {
"field": "date22",
"interval": 677376000,
"offset": 0,
"order": {
"_key": "asc"
},
"keyed": false,
"min_doc_count": 0
}
}
}
}
```
Response:
```auto
{
"aggregations": {
"Histogram": {
"buckets": [
{
"key_as_string": "2016-08-31",
"key": 1472615424000,
"doc_count": 2
},
{
"key_as_string": "2016-09-08",
"key": 1473292800000,
"doc_count": 0
},
{
"key_as_string": "2016-09-15",
"key": 1473970176000,
"doc_count": 0
},
{
"key_as_string": "2016-09-23",
"key": 1474647552000,
"doc_count": 0
},
{
"key_as_string": "2016-10-01",
"key": 1475324928000,
"doc_count": 0
},
{
"key_as_string": "2016-10-09",
"key": 1476002304000,
"doc_count": 0
},
{
"key_as_string": "2016-10-17",
"key": 1476679680000,
"doc_count": 0
},
{
"key_as_string": "2016-10-25",
"key": 1477357056000,
"doc_count": 0
},
{
"key_as_string": "2016-11-01",
"key": 1478034432000,
"doc_count": 0
},
{
"key_as_string": "2016-11-09",
"key": 1478711808000,
"doc_count": 0
},
{
"key_as_string": "2016-11-17",
"key": 1479389184000,
"doc_count": 0
},
{
"key_as_string": "2016-11-25",
"key": 1480066560000,
"doc_count": 0
},
{
"key_as_string": "2016-12-03",
"key": 1480743936000,
"doc_count": 0
},
{
"key_as_string": "2016-12-11",
"key": 1481421312000,
"doc_count": 0
},
{
"key_as_string": "2016-12-18",
"key": 1482098688000,
"doc_count": 0
},
{
"key_as_string": "2016-12-26",
"key": 1482776064000,
"doc_count": 0
},
{
"key_as_string": "2017-01-03",
"key": 1483453440000,
"doc_count": 0
},
{
"key_as_string": "2017-01-11",
"key": 1484130816000,
"doc_count": 0
},
{
"key_as_string": "2017-01-19",
"key": 1484808192000,
"doc_count": 0
},
{
"key_as_string": "2017-01-27",
"key": 1485485568000,
"doc_count": 0
},
{
"key_as_string": "2017-02-03",
"key": 1486162944000,
"doc_count": 0
},
{
"key_as_string": "2017-02-11",
"key": 1486840320000,
"doc_count": 0
},
{
"key_as_string": "2017-02-19",
"key": 1487517696000,
"doc_count": 0
},
{
"key_as_string": "2017-02-27",
"key": 1488195072000,
"doc_count": 0
},
{
"key_as_string": "2017-03-07",
"key": 1488872448000,
"doc_count": 0
},
{
"key_as_string": "2017-03-15",
"key": 1489549824000,
"doc_count": 0
},
{
"key_as_string": "2017-03-23",
"key": 1490227200000,
"doc_count": 0
},
{
"key_as_string": "2017-03-30",
"key": 1490904576000,
"doc_count": 0
},
{
"key_as_string": "2017-04-07",
"key": 1491581952000,
"doc_count": 0
}
]
}
}
}
```
First bucket should be 2016-09-01
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [June 13, 2019, 10:16am UTC](https://discuss.elastic.co/t/datehistogram-not-working-as-expected/185602/2 "2019-06-13T10:16:02Z")
Please format your code, logs or configuration files using `` icon as explained in [this guide](https://discuss.elastic.co/t/about-the-elasticsearch-category/21) and not the citation button. It will make your post more readable.
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Please update your post.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 11, 2019, 10:16am UTC](https://discuss.elastic.co/t/datehistogram-not-working-as-expected/185602/3 "2019-07-11T10:16:10Z")
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