title: How can I perform the equivalent of AddHours to a DateTime in Power Query?
body: <p>I've seen PowerQuery expressions that can subtract days from a datetime, like DateTimeZone.UtcNow.AddDays(-1). However, I'd like to subtract <em>hours</em> from a DateTime, not days.</p>
  
  <p>As I don't see a function like AddHours() in the Power Query specification, <strong>is there a robust way to go back a number of hours?</strong> For instance, would something like DateTimeZone.UtcNow + #duration(0, -1, 0, 0) give me a DateTime that's one hour earlier?</p>
  
  <p>[Note: I'd try this myself but I can't get Power Query installed on my local box and I can't find an independent editor to try it, hence the community ask]</p>