Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2016 1 4.  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)
 01/11/2016   18:21:49   ( -81.03,  31.26) 01/11/2016   18:23:01  ( -81.03,  31.22)    0.79                72
 01/11/2016   19:12:47   (  81.03,-161.47) 01/11/2016   19:13:46  (  81.03,-161.41)    1.01                59
 01/11/2016   20:03:51   ( -81.03,   5.86) 01/11/2016   20:04:31  ( -81.03,   5.78)    1.38                40
 01/11/2016   20:54:49   (  81.03, 173.14) 01/11/2016   20:55:16  (  81.03, 173.15)    0.29                27
 01/11/2016   21:45:53   ( -81.03, -19.54) 01/11/2016   21:46:01  ( -81.03, -19.65)    2.00                 8
 01/11/2016   22:36:51   (  81.03, 147.74) 01/11/2016   22:36:46  (  81.03, 147.72)    0.46                 5
 01/11/2016   23:27:55   ( -81.03, -44.94) 01/11/2016   23:27:31  ( -81.04, -45.08)    2.63                24
 01/12/2016   00:18:53   (  81.03, 122.35) 01/12/2016   00:18:16  (  81.03, 122.29)    1.19                37
 01/12/2016   01:09:56   ( -81.03, -70.34) 01/12/2016   01:09:00  ( -81.04, -70.52)    3.26                56