Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 15.  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)
 12/16/2018   14:41:45   (  70.13, -43.98) 12/16/2018   14:41:17  (  70.13, -44.02)    1.80                28
 12/16/2018   15:31:15   ( -70.02, 123.50) 12/16/2018   15:31:59  ( -70.03, 123.44)    2.75                44
 12/19/2018   06:08:44   ( -70.37, -95.39) 12/19/2018   06:07:32  ( -70.45, -96.07)   27.00                72
 12/19/2018   06:58:14   (  70.10,  71.86) 12/19/2018   06:58:11  (  70.09,  71.81)    2.38                 3
 12/19/2018   07:47:44   ( -69.99,-120.66) 12/19/2018   07:48:53  ( -69.99,-120.72)    2.34                69
 12/21/2018   22:25:16   ( -70.18,  20.21) 12/21/2018   22:24:21  ( -70.15,  20.18)    3.23                55
 12/21/2018   23:14:43   (  70.07,-172.30) 12/21/2018   23:15:05  (  70.05,-172.36)    3.05                22
 12/22/2018   00:04:26   ( -69.25,  -5.79) 12/22/2018   00:05:34  ( -69.26,  -3.89)   75.04                68
 12/24/2018   14:41:45   ( -70.09, 135.97) 12/24/2018   14:41:14  ( -70.11, 136.01)    2.38                31
 12/24/2018   15:31:12   (  69.98, -56.55) 12/24/2018   15:31:58  (  70.01, -56.53)    3.50                46
 12/27/2018   06:08:42   (  70.27,  84.48) 12/27/2018   06:07:29  (  70.34,  84.11)   15.74                73
 12/27/2018   06:58:14   ( -70.06,-108.19) 12/27/2018   06:58:08  ( -70.07,-108.16)    1.50                 6
 12/27/2018   07:47:41   (  69.94,  59.29) 12/27/2018   07:48:52  (  69.97,  59.29)    3.30                71