Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 5 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)
 05/23/2017   18:32:07   (  80.84,-148.50) 05/23/2017   18:33:18  (  80.84,-148.52)    0.47                71
 05/23/2017   19:23:13   ( -80.85,  18.83) 05/23/2017   19:24:03  ( -80.85,  18.72)    2.07                50
 05/23/2017   20:14:08   (  80.85,-173.78) 05/23/2017   20:14:48  (  80.85,-173.93)    2.79                40
 05/23/2017   21:05:15   ( -80.84,  -6.81) 05/23/2017   21:05:33  ( -80.85,  -6.69)    2.31                18
 05/23/2017   21:56:10   (  80.84, 160.58) 05/23/2017   21:56:18  (  80.85, 160.66)    1.44                 8
 05/23/2017   22:47:16   ( -80.85, -32.10) 05/23/2017   22:47:03  ( -80.85, -32.10)    0.43                13
 05/23/2017   23:38:11   (  80.85, 135.30) 05/23/2017   23:37:48  (  80.85, 135.25)    0.93                23
 05/24/2017   00:29:16   ( -80.85, -57.38) 05/24/2017   00:28:32  ( -80.85, -57.51)    2.39                44
 05/24/2017   01:20:11   (  80.86, 110.02) 05/24/2017   01:19:17  (  80.85, 109.84)    3.29                54