Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 8.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2018   22:24:48   ( -70.20,  20.15) 04/09/2018   22:23:46  ( -70.20,  20.17)    0.83                62
 04/09/2018   23:14:15   (  70.10,-172.35) 04/09/2018   23:14:30  (  70.09,-172.36)    0.51                15
 04/10/2018   00:03:52   ( -69.54,  -5.48) 04/10/2018   00:05:02  ( -69.52,  -4.19)   50.35                70
 04/12/2018   14:41:15   ( -70.17, 136.00) 04/12/2018   14:40:40  ( -70.15, 136.02)    2.68                35
 04/12/2018   15:30:42   (  70.07, -56.51) 04/12/2018   15:31:24  (  70.05, -56.51)    2.73                42
 04/15/2018   06:08:10   (  70.42,  84.60) 04/15/2018   06:06:58  (  70.47,  83.97)   23.93                72
 04/15/2018   06:57:43   ( -70.15,-108.17) 04/15/2018   06:57:36  ( -70.15,-108.22)    2.10                 7
 04/15/2018   07:47:10   (  70.04,  59.33) 04/15/2018   07:48:20  (  70.05,  59.25)    3.29                70
 04/17/2018   22:24:41   (  70.22,-159.81) 04/17/2018   22:23:49  (  70.21,-159.86)    2.00                52
 04/17/2018   23:14:11   ( -70.12,   7.67) 04/17/2018   23:14:31  ( -70.10,   7.63)    2.01                20
 04/18/2018   00:03:53   (  69.17, 174.04) 04/18/2018   00:04:59  (  69.16, 176.32)   90.50                66
 04/20/2018   14:41:09   (  70.18, -43.99) 04/20/2018   14:40:44  (  70.17, -44.02)    2.12                25
 04/20/2018   15:30:38   ( -70.08, 123.50) 04/20/2018   15:31:25  ( -70.06, 123.47)    2.78                47