Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 10 20.  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)
 10/20/2017   21:43:06   (  80.70, 164.32) 10/20/2017   21:44:18  (  80.76, 165.73)   26.11                72
 10/20/2017   22:34:03   ( -80.76, -26.79) 10/20/2017   22:35:02  ( -80.75, -26.76)    1.36                59
 10/20/2017   23:25:03   (  80.76, 140.41) 10/20/2017   23:25:48  (  80.76, 140.32)    1.61                45
 10/21/2017   00:16:04   ( -80.76, -52.14) 10/21/2017   00:16:32  ( -80.75, -52.17)    1.63                28
 10/21/2017   01:07:04   (  80.76, 115.06) 10/21/2017   01:07:18  (  80.76, 114.91)    2.75                14
 10/21/2017   01:58:06   ( -80.76, -77.85) 10/21/2017   01:58:03  ( -80.77, -77.93)    2.11                 3
 10/21/2017   02:49:06   (  80.76,  89.36) 10/21/2017   02:48:48  (  80.77,  89.50)    2.70                18
 10/21/2017   03:40:07   ( -80.76,-103.20) 10/21/2017   03:39:33  ( -80.78,-103.34)    2.75                34
 10/21/2017   04:31:07   (  80.76,  64.02) 10/21/2017   04:30:18  (  80.77,  64.09)    1.48                49
 10/21/2017   05:22:08   ( -80.77,-128.55) 10/21/2017   05:21:02  ( -80.76,-128.40)    2.98                66
 11/03/2017   14:44:32   ( -80.75,  90.78) 11/03/2017   14:45:36  ( -80.75,  90.61)    2.97                64
 11/03/2017   15:35:35   (  80.75,-101.94) 11/03/2017   15:36:21  (  80.75,-102.09)    2.77                46
 11/03/2017   16:26:34   ( -80.75,  65.06) 11/03/2017   16:27:06  ( -80.75,  65.20)    2.57                32
 11/03/2017   17:17:37   (  80.75,-127.65) 11/03/2017   17:17:51  (  80.75,-127.50)    2.68                14
 11/03/2017   18:08:35   ( -80.75,  39.71) 11/03/2017   18:08:36  ( -80.75,  39.79)    1.53                 1
 11/03/2017   18:59:38   (  80.75,-153.00) 11/03/2017   18:59:21  (  80.75,-152.91)    1.55                17
 11/03/2017   19:50:36   ( -80.76,  14.35) 11/03/2017   19:50:06  ( -80.75,  14.38)    0.61                30