title: Google Charts displays wrong month
body: <p>I've got a google line chart which shows the correct line; but the annotation of the Date is off by one month exactly. The json data has the correct date; but somehow google charts transforms it:
  <a href="https://i.stack.imgur.com/XQAKK.png" rel="noreferrer"><img src="https://i.stack.imgur.com/XQAKK.png" alt="chart with wrong date"></a></p>
  
  <p>Anybody an idea why this happens?</p>