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, -34.95)   10.06                75
 11/30/2017   23:56:27   (  80.72, 132.82) 11/30/2017   23:57:22  (  80.72, 132.98)    2.99                55
 12/01/2017   00:47:21   ( -80.73, -59.60) 12/01/2017   00:48:06  ( -80.72, -59.67)    1.84                45
 12/01/2017   01:38:27   (  80.72, 107.45) 12/01/2017   01:38:51  (  80.72, 107.56)    2.09                24
 12/01/2017   02:29:22   ( -80.73, -84.97) 12/01/2017   02:29:36  ( -80.72, -85.09)    2.69                14
 12/01/2017   03:20:28   (  80.73,  82.08) 12/01/2017   03:20:21  (  80.72,  82.15)    1.24                 7
 12/01/2017   04:11:24   ( -80.73,-110.69) 12/01/2017   04:11:07  ( -80.74,-110.85)    3.35                17
 12/01/2017   05:02:29   (  80.73,  56.72) 12/01/2017   05:01:51  (  80.73,  56.73)    0.72                38
 12/01/2017   05:53:25   ( -80.73,-136.06) 12/01/2017   05:52:36  ( -80.73,-135.92)    2.52                49