title: How to get GMT offset from candle in the past MQL4
body: <p>It is actually an MQL4 question.</p>
  
  <p>What I actually need to code is an indicator, which draws a vertical line on the day the timezone of the broker has been changed. This is happening once on every 6 month.</p>
  
  <p>Any idea how to get the GMT offset of a candle in the past or anything similar ?</p>
  
  <p>Thanks for your help guys!</p>