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This question originated when I came upon ( another thread ) about Python's datetime and timedelta objects. I followed the update by jimgardener and read the comments by eyquem ,and tried out some python code ..I am having a bad time understanding the way things work here(due to my newbie to python status)..I thought it was proper to ask a new question import datetime #for t1=23:30:00 PM t1 = datetime.time(23,30,00) #for t1=00:15:30 AM t2 = datetime.time(0,15,30) td1 = datetime.timedelta(hours=t1.hour,minutes = t1.minute,seconds=t1.second) td2 = datetime.timedelta(hours=t2.hour,minutes = t2.minute,seconds=t2.second) #substarcting timedeltas tdiff = td2-td1 printing these variables yielded td1 ==> datetime.timedelta(0, 84600) td1.seconds ==> 84600 td2 ==> datetime.timedelta(0, 930) td2.seconds ==> 930 tdiff ==> datetime.timedelta(-1, 2730) When I looked at these results,I noticed that td1.seconds (ie 84600) is equivalent to 84600/60 ==> 1410 minutes 1410/60 ==> 23.5 hours or in short,td1 represents the duration **from previous midnight** to 23:30 PM now , td2.seconds (ie 930) is equivalent to 930/60 ==> 15.5 minutes or 15 minutes and 30 seconds which means td2 represents the duration from **that midnight** to 00:15:30 AM when tdiff is examined,I found that tdiff ==> timedelta(-1,2730) tdiff.seconds ==> 2730 tdiff.seconds/60 ==>45 minutes this is the same as duration between t1(23:30:00 PM) and t2(00:15:30 AM) assuming that t2 follows t1 My question is,since td1 is the duration from previous midnight to 23:30:00 PM and

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