Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 12 8.  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)
 12/14/2017   16:06:45   (  80.72,-109.37) 12/14/2017   16:07:51  (  80.70,-109.43)    1.68                66
 12/14/2017   16:57:43   ( -80.72,  57.90) 12/14/2017   16:58:36  ( -80.70,  57.94)    1.84                53
 12/14/2017   17:48:46   (  80.72,-134.74) 12/14/2017   17:49:21  (  80.71,-134.84)    2.37                35
 12/14/2017   18:39:45   ( -80.71,  32.18) 12/14/2017   18:40:07  ( -80.72,  32.18)    1.80                22
 12/14/2017   19:30:48   (  80.71,-160.47) 12/14/2017   19:30:52  (  80.73,-160.60)    3.08                 4
 12/14/2017   20:21:46   ( -80.71,   6.81) 12/14/2017   20:21:37  ( -80.73,   6.77)    1.67                 9
 12/14/2017   21:12:49   (  80.72, 174.15) 12/14/2017   21:12:21  (  80.71, 174.33)    3.18                28
 12/14/2017   22:03:47   ( -80.72, -18.56) 12/14/2017   22:03:07  ( -80.73, -18.65)    1.96                40
 12/14/2017   22:54:49   (  80.72, 148.78) 12/14/2017   22:53:50  (  80.71, 148.91)    2.51                59