Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 11 21.  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)
 11/30/2017   23:05:24   ( -80.69, -35.31) 11/30/2017   23:06:39  ( -80.76, -34.93)   10.19                75
 11/30/2017   23:56:27   (  80.72, 132.81) 11/30/2017   23:57:22  (  80.72, 132.99)    3.35                55
 12/01/2017   00:47:22   ( -80.73, -59.61) 12/01/2017   00:48:07  ( -80.72, -59.66)    1.75                45
 12/01/2017   01:38:27   (  80.72, 107.44) 12/01/2017   01:38:51  (  80.72, 107.58)    2.45                24
 12/01/2017   02:29:23   ( -80.72, -85.33) 12/01/2017   02:29:37  ( -80.74, -85.42)    2.50                14
 12/01/2017   03:20:28   (  80.73,  82.07) 12/01/2017   03:20:21  (  80.72,  82.16)    1.61                 7
 12/01/2017   04:11:24   ( -80.73,-110.69) 12/01/2017   04:11:07  ( -80.74,-110.84)    3.03                17
 12/01/2017   05:02:29   (  80.73,  56.71) 12/01/2017   05:01:51  (  80.73,  56.74)    0.96                38
 12/01/2017   05:53:25   ( -80.73,-136.06) 12/01/2017   05:52:36  ( -80.72,-135.91)    2.86                49