Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 10 17.  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)
 10/18/2017   14:42:13   ( -70.15, 136.02) 10/18/2017   14:41:27  ( -70.17, 135.99)    2.05                46
 10/18/2017   15:31:40   (  70.05, -56.48) 10/18/2017   15:32:11  (  70.04, -56.51)    2.15                31
 10/21/2017   06:09:01   (  70.89,  85.36) 10/21/2017   06:07:53  (  70.92,  83.23)   77.43                68
 10/21/2017   06:58:43   ( -70.12,-108.15) 10/21/2017   06:58:21  ( -70.10,-108.15)    1.46                22
 10/21/2017   07:48:10   (  70.01,  59.35) 10/21/2017   07:49:06  (  70.03,  59.27)    3.31                56
 10/23/2017   22:25:42   (  70.18,-159.81) 10/23/2017   22:24:33  (  70.18,-159.82)    0.92                69
 10/23/2017   23:15:12   ( -70.07,   7.67) 10/23/2017   23:15:15  ( -70.09,   7.63)    2.58                 3
 10/24/2017   00:04:43   (  69.75, 174.86) 10/24/2017   00:05:54  (  69.71, 175.52)   25.98                71
 10/26/2017   14:42:12   (  70.13, -44.00) 10/26/2017   14:41:27  (  70.12, -43.96)    2.03                45
 10/26/2017   15:31:42   ( -70.03, 123.48) 10/26/2017   15:32:09  ( -70.04, 123.48)    0.73                27
 10/29/2017   06:09:00   ( -71.01, -94.46) 10/29/2017   06:07:53  ( -71.02, -96.95)   90.33                67
 10/29/2017   06:58:42   (  70.08,  71.80) 10/29/2017   06:58:21  (  70.07,  71.88)    3.28                21
 10/29/2017   07:48:12   ( -69.98,-120.71) 10/29/2017   07:49:03  ( -69.98,-120.66)    1.76                51