title: 5-minutes interval time series in R
body: <p>I create a data set with dates starting from 2010-01-01 to 2010-08-1, with 5-minute intervals.</p>
  
  <pre><code>library(chron)
  t1 &lt;- chron("2010/01/01","00:00:00",format=c("y/m/d","h:m:s"))
  t2 &lt;- chron("2018/01/01","00:00:01",format=c("y/m/d","h:m:s"))
  deltat &lt;- times("00:05:00")
  date &lt;- seq(t1,t2,by=times("00:05:00"))
  </code></pre>
  
  <p>I format the date to follow the ISO 8601 standards using the parsedate package to change the timezone to GMT+2.</p>
  
  <pre><code>library(parsedate)
  date1 &lt;- format_iso_8601(as.POSIXlt(date,tz="Etc/GMT+2"))
  head(date1)
  [1] "2009-12-31T22:00:00+00:00" "2009-12-31T22:05:00+00:00" "2009-12-31T22:10:00+00:00"
  [4] "2009-12-31T22:15:00+00:00" "2009-12-31T22:20:00+00:00" "2009-12-31T22:25:00+00:00"
  </code></pre>
  
  <p>However, when I use View():</p>
  
  <pre><code>View(date1)
  </code></pre>
  
  <p>The intervals change after observation 510918. I can't understand the reason. The same happens if I change the timezone. How can I fix this?</p>
  
  <pre><code>2014-11-09T22:24:59+00:00
  2014-11-09T22:30:00+00:00
  2014-11-09T22:35:00+00:00
  2014-11-09T22:40:00+00:00
  2014-11-09T22:45:00+00:00
  2014-11-09T22:50:00+00:00
  2014-11-09T22:55:00+00:00
  2014-11-09T23:00:00+00:00
  2014-11-09T23:05:00+00:00
  2014-11-09T23:09:59+00:00
  2014-11-09T23:15:00+00:00
  2014-11-09T23:20:00+00:00
  2014-11-09T23:25:00+00:00
  2014-11-09T23:30:00+00:00
  2014-11-09T23:35:00+00:00
  2014-11-09T23:40:00+00:00
  2014-11-09T23:45:00+00:00
  2014-11-09T23:50:00+00:00
  2014-11-09T23:54:59+00:00
  2014-11-10T00:00:00+00:00
  2014-11-10T00:05:00+00:00
  2014-11-10T00:10:00+00:00
  2014-11-10T00:15:00+00:00
  2014-11-10T00:20:00+00:00
  2014-11-10T00:25:00+00:00
  2014-11-10T00:30:00+00:00
  2014-11-10T00:35:00+00:00
  2014-11-10T00:39:59+00:00
  </code></pre>