Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 5 17.  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,-148.48) 05/23/2017   18:33:18  (  80.84,-148.50)    0.28                71
 05/23/2017   19:23:13   ( -80.84,  18.81) 05/23/2017   19:24:03  ( -80.85,  18.70)    1.96                50
 05/23/2017   20:14:08   (  80.85,-173.76) 05/23/2017   20:14:48  (  80.84,-173.91)    2.63                40
 05/23/2017   21:05:15   ( -80.84,  -6.84) 05/23/2017   21:05:33  ( -80.85,  -6.71)    2.53                18
 05/23/2017   21:56:10   (  80.84, 160.59) 05/23/2017   21:56:18  (  80.85, 160.68)    1.59                 8
 05/23/2017   22:47:15   ( -80.85, -32.12) 05/23/2017   22:47:02  ( -80.85, -32.12)    0.62                13
 05/23/2017   23:38:10   (  80.85, 135.31) 05/23/2017   23:37:47  (  80.85, 135.27)    0.78                23
 05/24/2017   00:29:16   ( -80.85, -57.40) 05/24/2017   00:28:32  ( -80.85, -57.53)    2.24                44
 05/24/2017   01:20:11   (  80.86, 110.04) 05/24/2017   01:19:17  (  80.85, 109.86)    3.13                54