# Index Epoch to date time in elasticserarch
**URL:** https://discuss.elastic.co/t/index-epoch-to-date-time-in-elasticserarch/244709
**Category:** Elasticsearch
**Created:** [August 12, 2020, 12:05pm UTC](https://discuss.elastic.co/t/index-epoch-to-date-time-in-elasticserarch/244709 "2020-08-12T12:05:18Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@sana1](https://discuss.elastic.co/u/sana1)
#### Post date: [August 12, 2020, 12:05pm UTC](https://discuss.elastic.co/t/index-epoch-to-date-time-in-elasticserarch/244709/1 "2020-08-12T12:05:18Z")
I have a filed in my index with epoch time value as "1,596,041,843.199"
when ever I try to re-index is using date mapping it gives me error "ailed to parse field [field\_name] of type [date] in document with id 'xxxxxxxxxx'. Preview of field's value: '1.59604202052859E9"
reindex
'''
PUT index
{
"mappings": {
"properties": {
"field\_name": {
"type": "date",
"format": "yyyy-MM-dd HH:mm:ss||yyyy-MM-dd||epoch\_millis"
}
}
}
}
'''
'''
POST \_reindex
{
"source": {
"index": "original-\*"
},
"dest": {
"index": "index"
}
}
'''
I want to use my filed in human readable date, but no success till now
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 9, 2020, 12:05pm UTC](https://discuss.elastic.co/t/index-epoch-to-date-time-in-elasticserarch/244709/2 "2020-09-09T12:05:29Z")
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