Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 11 19.  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)
 11/19/2017   14:42:09   ( -70.12, 135.98) 11/19/2017   14:41:22  ( -70.13, 135.99)    1.15                47
 11/19/2017   15:31:36   (  70.02, -56.52) 11/19/2017   15:32:06  (  70.01, -56.52)    0.78                30
 11/22/2017   06:08:56   (  70.84,  85.29) 11/22/2017   06:07:48  (  70.93,  83.17)   77.93                68
 11/22/2017   06:58:37   ( -70.12,-108.14) 11/22/2017   06:58:16  ( -70.10,-108.19)    3.39                21
 11/22/2017   07:48:05   (  69.96,  59.28) 11/22/2017   07:49:00  (  69.99,  59.29)    2.62                55
 11/24/2017   22:25:35   (  70.17,-159.81) 11/24/2017   22:24:27  (  70.17,-159.85)    1.29                68
 11/24/2017   23:15:05   ( -70.06,   7.66) 11/24/2017   23:15:09  ( -70.07,   7.62)    1.77                 4
 11/25/2017   00:04:37   (  69.68, 174.77) 11/25/2017   00:05:48  (  69.70, 175.49)   27.62                71
 11/27/2017   14:42:04   (  70.10, -44.03) 11/27/2017   14:41:20  (  70.09, -43.96)    2.71                44
 11/27/2017   15:31:34   ( -70.00, 123.46) 11/27/2017   15:32:02  ( -69.99, 123.51)    2.12                28
 11/30/2017   06:08:52   ( -70.91, -94.59) 11/30/2017   06:07:44  ( -70.91, -96.80)   80.20                68
 11/30/2017   06:58:32   (  70.08,  71.83) 11/30/2017   06:58:14  (  70.08,  71.84)    0.99                18
 11/30/2017   07:48:02   ( -69.98,-120.68) 11/30/2017   07:48:56  ( -69.97,-120.69)    1.31                54
 12/02/2017   22:25:33   ( -70.18,  20.20) 12/02/2017   22:24:24  ( -70.15,  20.18)    2.48                69
 12/02/2017   23:15:00   (  70.06,-172.32) 12/02/2017   23:15:08  (  70.06,-172.37)    1.83                 8
 12/03/2017   00:04:34   ( -69.74,  -5.13) 12/03/2017   00:05:46  ( -69.74,  -4.57)   21.64                72