# Logstash time stamp error
**URL:** https://discuss.elastic.co/t/logstash-time-stamp-error/75476
**Category:** Logstash
**Created:** [February 17, 2017, 11:23am UTC](https://discuss.elastic.co/t/logstash-time-stamp-error/75476 "2017-02-17T11:23:44Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sabyasachi\_mallick](https://discuss.elastic.co/u/sabyasachi_mallick)
#### Post date: [February 17, 2017, 11:23am UTC](https://discuss.elastic.co/t/logstash-time-stamp-error/75476/1 "2017-02-17T11:23:44Z")
my logstash in utc time zone.
when it is loading data timestamp is in below format
"@timestamp" =\> "2017-02-17T05:17:51.289Z",
but when i am just extracting date from @timestamp field with a ruby code as below
tstamp = event['@timestamp'].to\_i
event['date']=[Time.at](http://Time.at)(tstamp).strftime('%Y-%m-%d')
it should give me 2017-02-17 but it is giving me the 2017-02-16 date..
not able to figure out why?
"date" =\> "2017-02-16"
---
### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [February 18, 2017, 5:31pm UTC](https://discuss.elastic.co/t/logstash-time-stamp-error/75476/2 "2017-02-18T17:31:10Z")
It seems Ruby's Time class uses the local timezone by default. Perhaps you can use its getutc method to get a UTC timestamp?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 18, 2017, 5:31pm UTC](https://discuss.elastic.co/t/logstash-time-stamp-error/75476/3 "2017-03-18T17:31:19Z")
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