title: EST and EDT time info
body: <p>I need to know the TimeZoneinfo which takes care of EST and EDT both i.e. if EST time is applicable then it should give me EST time and when EDT is applicable then I should get EDT time.</p>
  
  <p>Can following method be used in C#?</p>
  
  <p>TimeZoneInfo.ConvertTimeBySystemTimeZoneId(DateTime.UtcNow, "Eastern Standard Time")</p>
  
  <p>Thanks in advance.</p>