title: Transfer hour number to date in NC file using R
body: <p>I try to read a NC data using ncdf soft-package, in which I read the time dimension. </p>
  
  <pre><code>ti&lt;-get.var.ncdf(nc,varid="time")
  nc$dim$time$unit
  "hours since 1-1-1 00:00:0.0"
  </code></pre>
  
  <p>So the number is start from 1-1-1 00:00:00 with each hour</p>
  
  <p>I am wondering how to transfer it to date, like 1/1/2003</p>
  
  <p>Thank you</p>