# Date format with month's name

**URL:** https://discuss.elastic.co/t/date-format-with-months-name/94344
**Category:** Elasticsearch
**Created:** [July 24, 2017, 2:28pm UTC](https://discuss.elastic.co/t/date-format-with-months-name/94344 "2017-07-24T14:28:26Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![xavierfacq](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xavierfacq/32/8744_2.png) [@xavierfacq](https://discuss.elastic.co/u/xavierfacq)
#### Post date: [July 24, 2017, 8:16pm UTC](https://discuss.elastic.co/t/date-format-with-months-name/94344/2 "2017-07-24T20:16:43Z")

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Hi,

First you can read this post: [Invalid format of timestamp](https://discuss.elastic.co/t/invalid-format-of-timestamp/94238/2?u=xavierfacq)

Note that if you change the mapping you have to re-create an index with the new mapping.  
Your date format will be something like that:

"dd/MMM/yyyy:HH:mm:ss Z"

bye,  
Xavier

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