Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2015 9 18.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2015   15:37:56   (  81.04,-107.65) 09/27/2015   15:39:01  (  81.04,-107.64)    0.40                65
 09/27/2015   16:28:55   ( -81.04,  59.56) 09/27/2015   16:29:46  ( -81.04,  59.56)    0.26                51
 09/27/2015   17:19:58   (  81.04,-132.97) 09/27/2015   17:20:31  (  81.04,-133.08)    1.90                33
 09/27/2015   18:10:57   ( -81.04,  34.23) 09/27/2015   18:11:16  ( -81.05,  34.12)    2.08                19
 09/27/2015   19:02:01   (  81.04,-158.67) 09/27/2015   19:02:01  (  81.05,-158.53)    2.51                 0
 09/27/2015   19:52:59   ( -81.04,   8.91) 09/27/2015   19:52:45  ( -81.03,   9.04)    2.38                14
 09/27/2015   20:44:02   (  81.04, 176.39) 09/27/2015   20:43:30  (  81.03, 176.39)    0.55                32
 09/27/2015   21:35:00   ( -81.04, -16.42) 09/27/2015   21:34:14  ( -81.04, -16.41)    0.25                46