Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2016 1 11.  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   20:54:49   (  81.03, 173.07) 01/11/2016   20:55:16  (  81.03, 173.12)    0.84                27
 01/11/2016   21:45:53   ( -81.03, -19.66) 01/11/2016   21:46:01  ( -81.04, -19.75)    1.84                 8
 01/11/2016   22:36:51   (  81.03, 147.67) 01/11/2016   22:36:46  (  81.03, 147.68)    0.47                 5
 01/11/2016   23:27:54   ( -81.03, -44.68) 01/11/2016   23:27:30  ( -81.02, -44.81)    2.37                24
 01/12/2016   00:18:53   (  81.03, 122.28) 01/12/2016   00:18:16  (  81.03, 122.25)    0.89                37
 01/12/2016   01:09:56   ( -81.03, -70.08) 01/12/2016   01:09:00  ( -81.03, -70.25)    2.91                56
 01/12/2016   02:00:54   (  81.03,  97.26) 01/12/2016   01:59:45  (  81.02,  97.18)    1.50                69
 01/25/2016   02:04:49   ( -81.03, -84.32) 01/25/2016   02:05:52  ( -81.02, -84.42)    1.90                63
 01/25/2016   02:55:51   (  81.03,  82.68) 01/25/2016   02:56:38  (  81.04,  82.57)    2.10                47
 01/25/2016   03:46:51   ( -81.03,-109.73) 01/25/2016   03:47:22  ( -81.03,-109.86)    2.33                31
 01/25/2016   04:37:52   (  81.03,  57.65) 01/25/2016   04:38:07  (  81.02,  57.50)    2.69                15
 01/25/2016   05:28:53   ( -81.03,-135.14) 01/25/2016   05:28:52  ( -81.03,-135.30)    2.80                 1
 01/25/2016   06:19:54   (  81.03,  32.25) 01/25/2016   06:19:37  (  81.03,  32.06)    3.28                17
 01/25/2016   07:10:56   ( -81.03,-160.92) 01/25/2016   07:10:22  ( -81.03,-160.73)    3.30                34
 01/25/2016   08:01:57   (  81.03,   6.47) 01/25/2016   08:01:07  (  81.03,   6.62)    2.68                50