Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 11 18.  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   ( -70.11, 135.96) 11/19/2017   14:41:22  ( -70.14, 135.98)    3.23                47
 11/19/2017   15:31:36   (  70.01, -56.54) 11/19/2017   15:32:06  (  70.02, -56.54)    1.73                30
 11/22/2017   06:08:55   (  70.88,  85.35) 11/22/2017   06:07:47  (  70.89,  83.24)   77.18                68
 11/22/2017   06:58:37   ( -70.11,-108.15) 11/22/2017   06:58:16  ( -70.11,-108.21)    2.05                21
 11/22/2017   07:48:04   (  70.00,  59.34) 11/22/2017   07:49:00  (  70.00,  59.27)    2.84                56
 11/24/2017   22:25:36   (  70.16,-159.83) 11/24/2017   22:24:28  (  70.18,-159.86)    2.82                68
 11/24/2017   23:15:06   ( -70.05,   7.65) 11/24/2017   23:15:09  ( -70.03,   7.68)    2.72                 3
 11/25/2017   00:04:38   (  69.66, 174.75) 11/25/2017   00:05:48  (  69.66, 175.55)   30.62                70
 11/27/2017   14:42:04   (  70.09, -44.05) 11/27/2017   14:41:20  (  70.11, -43.98)    3.53                44
 11/27/2017   15:31:34   ( -69.98, 123.43) 11/27/2017   15:32:02  ( -70.01, 123.49)    3.35                28
 11/30/2017   06:08:52   ( -70.89, -94.62) 11/30/2017   06:07:44  ( -70.92, -96.82)   80.17                68
 11/30/2017   06:58:32   (  70.06,  71.80) 11/30/2017   06:58:14  (  70.09,  71.81)    3.19                18
 11/30/2017   07:48:02   ( -69.96,-120.71) 11/30/2017   07:48:56  ( -69.99,-120.71)    2.59                54