# Error in logstash date filter in kibana
**URL:** https://discuss.elastic.co/t/error-in-logstash-date-filter-in-kibana/238872
**Category:** Kibana
**Created:** [June 26, 2020, 2:26pm UTC](https://discuss.elastic.co/t/error-in-logstash-date-filter-in-kibana/238872 "2020-06-26T14:26:13Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@falconpurple](https://discuss.elastic.co/u/falconpurple)
#### Post date: [June 26, 2020, 2:26pm UTC](https://discuss.elastic.co/t/error-in-logstash-date-filter-in-kibana/238872/1 "2020-06-26T14:26:13Z")
Hi,
I am parsing log file and one of my field is :
```auto
2020-06-26 12:56:15.258
```
A part of conf file in logstash is :
```auto
grok {
match => {
"message" => "%{TIMESTAMP_ISO8601:logdates}"
}
}
date {
match => ["logdates","yyyy-MM-dd HH:mm:ss.SSS"]
target => "logdates"
timezone => "CET"
}
```
But when I go to Kibana, I can only see **@timestamp** for a Time Filter when creating my Index Pattern. Any ideas on what I am doing wrong?
Really appreciate any help.
---
### Author:  [@flash1293](https://discuss.elastic.co/u/flash1293)
#### Post date: [July 1, 2020, 3:49pm UTC](https://discuss.elastic.co/t/error-in-logstash-date-filter-in-kibana/238872/2 "2020-07-01T15:49:08Z")
Can you check the mapping of the index? If there is no `logdates` field, this is a Logstash problem, not a Kibana problem.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 29, 2020, 3:49pm UTC](https://discuss.elastic.co/t/error-in-logstash-date-filter-in-kibana/238872/3 "2020-07-29T15:49:17Z")
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