Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 16.  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)
 09/19/2017   06:08:54   (  70.76,  85.20) 09/19/2017   06:07:45  (  70.83,  83.33)   68.73                69
 09/19/2017   06:58:34   ( -70.10,-108.14) 09/19/2017   06:58:15  ( -70.12,-108.20)    3.15                19
 09/19/2017   07:48:01   (  70.00,  59.36) 09/19/2017   07:48:59  (  70.00,  59.29)    2.62                58
 09/21/2017   22:25:34   (  70.18,-159.78) 09/21/2017   22:24:28  (  70.16,-159.82)    2.56                66
 09/21/2017   23:15:04   ( -70.07,   7.69) 09/21/2017   23:15:10  ( -70.07,   7.64)    2.20                 6
 09/22/2017   00:04:37   (  69.63, 174.73) 09/22/2017   00:05:48  (  69.63, 175.60)   33.60                71
 09/24/2017   14:42:05   (  70.14, -43.96) 09/24/2017   14:41:24  (  70.11, -43.98)    3.20                41
 09/24/2017   15:31:35   ( -70.04, 123.52) 09/24/2017   15:32:06  ( -70.02, 123.47)    2.33                31
 09/27/2017   06:08:58   ( -70.81, -94.74) 09/27/2017   06:07:49  ( -70.87, -96.73)   72.94                69
 09/27/2017   06:58:36   (  70.10,  71.86) 09/27/2017   06:58:20  (  70.07,  71.85)    3.23                16
 09/27/2017   07:48:06   ( -70.00,-120.66) 09/27/2017   07:49:02  ( -69.98,-120.69)    2.41                56
 09/29/2017   22:25:40   ( -70.17,  20.18) 09/29/2017   22:24:32  ( -70.14,  20.20)    2.48                68
 09/29/2017   23:15:07   (  70.05,-172.33) 09/29/2017   23:15:16  (  70.03,-172.32)    2.68                 9
 09/30/2017   00:04:42   ( -69.68,  -5.22) 09/30/2017   00:05:53  ( -69.67,  -4.47)   29.12                71