Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 12 13.  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   16:06:46   (  80.70,-109.68) 12/14/2017   16:07:51  (  80.72,-109.67)    1.44                65
 12/14/2017   16:57:44   ( -80.70,  57.55) 12/14/2017   16:58:36  ( -80.72,  57.63)    2.23                52
 12/14/2017   17:48:47   (  80.71,-135.05) 12/14/2017   17:49:21  (  80.72,-135.09)    1.35                34
 12/14/2017   18:39:45   ( -80.71,  32.18) 12/14/2017   18:40:06  ( -80.72,  32.21)    1.56                21
 12/14/2017   19:30:47   (  80.71,-160.43) 12/14/2017   19:30:50  (  80.72,-160.50)    1.72                 3
 12/14/2017   20:21:45   ( -80.71,   6.81) 12/14/2017   20:21:35  ( -80.72,   6.79)    1.25                10
 12/14/2017   21:12:48   (  80.72, 174.20) 12/14/2017   21:12:20  (  80.72, 174.08)    2.35                28
 12/14/2017   22:03:46   ( -80.72, -18.56) 12/14/2017   22:03:05  ( -80.73, -18.63)    1.55                41
 12/14/2017   22:54:49   (  80.72, 148.82) 12/14/2017   22:53:50  (  80.73, 148.66)    3.08                59