Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 6.  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)
 12/08/2018   14:41:49   ( -70.09, 135.96) 12/08/2018   14:41:16  ( -70.10, 136.03)    2.94                33
 12/08/2018   15:31:16   (  69.99, -56.55) 12/08/2018   15:32:00  (  69.99, -56.48)    2.45                44
 12/11/2018   06:08:45   (  70.34,  84.56) 12/11/2018   06:07:33  (  70.41,  84.01)   22.00                72
 12/11/2018   06:58:18   ( -70.07,-108.20) 12/11/2018   06:58:10  ( -70.05,-108.12)    3.62                 8
 12/11/2018   07:47:45   (  69.96,  59.29) 12/11/2018   07:48:54  (  69.94,  59.36)    3.30                69
 12/13/2018   22:25:17   (  70.14,-159.84) 12/13/2018   22:24:23  (  70.15,-159.82)    1.10                54
 12/13/2018   23:14:47   ( -70.04,   7.65) 12/13/2018   23:15:05  ( -70.05,   7.65)    1.37                18
 12/14/2018   00:04:28   (  69.15, 174.09) 12/14/2018   00:05:34  (  69.15, 176.27)   86.44                66
 12/16/2018   14:41:46   (  70.11, -44.00) 12/16/2018   14:41:17  (  70.10, -43.98)    0.86                29
 12/16/2018   15:31:16   ( -70.01, 123.48) 12/16/2018   15:31:59  ( -70.00, 123.49)    0.51                43
 12/19/2018   06:08:44   ( -70.35, -95.42) 12/19/2018   06:07:31  ( -70.42, -96.02)   23.91                73
 12/19/2018   06:58:14   (  70.07,  71.83) 12/19/2018   06:58:10  (  70.06,  71.85)    1.32                 4
 12/19/2018   07:47:44   ( -69.97,-120.68) 12/19/2018   07:48:52  ( -69.96,-120.67)    1.77                68