Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 10.  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)
 12/11/2018   06:08:45   (  70.35,  84.58) 12/11/2018   06:07:33  (  70.39,  84.03)   20.71                72
 12/11/2018   06:58:18   ( -70.07,-108.19) 12/11/2018   06:58:11  ( -70.09,-108.18)    1.58                 7
 12/11/2018   07:47:45   (  69.97,  59.31) 12/11/2018   07:48:55  (  69.97,  59.30)    0.46                70
 12/13/2018   22:25:17   (  70.15,-159.83) 12/13/2018   22:24:23  (  70.13,-159.80)    2.57                54
 12/13/2018   23:14:47   ( -70.04,   7.65) 12/13/2018   23:15:05  ( -70.04,   7.67)    0.98                18
 12/14/2018   00:04:28   (  69.16, 174.10) 12/14/2018   00:05:34  (  69.13, 176.30)   87.02                66
 12/16/2018   14:41:45   (  70.12, -44.00) 12/16/2018   14:41:17  (  70.14, -44.04)    3.10                28
 12/16/2018   15:31:15   ( -70.01, 123.49) 12/16/2018   15:31:58  ( -69.99, 123.51)    2.69                43
 12/19/2018   06:08:44   ( -70.35, -95.41) 12/19/2018   06:07:31  ( -70.41, -96.00)   22.63                73
 12/19/2018   06:58:14   (  70.08,  71.83) 12/19/2018   06:58:11  (  70.10,  71.80)    2.58                 3
 12/19/2018   07:47:44   ( -69.97,-120.68) 12/19/2018   07:48:53  ( -69.99,-120.73)    2.87                69
 12/21/2018   22:25:16   ( -70.15,  20.18) 12/21/2018   22:24:21  ( -70.15,  20.17)    0.39                55
 12/21/2018   23:14:43   (  70.04,-172.34) 12/21/2018   23:15:05  (  70.06,-172.37)    2.50                22