24 Jan
                
                    2011
                
            
            
                24 Jan
                
                '11
                
            
            
            
        
    
                11:38 a.m.
            
        Hi Slobodan, I've pushed a patch to fix this. You now get "0 milliseconds" when serializing an interval whose components are all 0. I hope that solves the problem. Best, Marijn