Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 1.  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)
 12/03/2018   06:08:47   ( -70.43, -95.31) 12/03/2018   06:07:35  ( -70.50, -96.13)   31.23                72
 12/03/2018   06:58:19   (  70.06,  71.79) 12/03/2018   06:58:13  (  70.07,  71.85)    2.85                 6
 12/03/2018   07:47:48   ( -70.00,-120.66) 12/03/2018   07:48:55  ( -69.98,-120.69)    2.10                67
 12/05/2018   22:25:19   ( -70.19,  20.21) 12/05/2018   22:24:23  ( -70.18,  20.14)    2.64                56
 12/05/2018   23:14:47   (  70.03,-172.37) 12/05/2018   23:15:06  (  70.02,-172.30)    2.92                19
 12/06/2018   00:04:28   ( -69.31,  -5.72) 12/06/2018   00:05:36  ( -69.29,  -3.92)   70.79                68
 12/08/2018   14:41:48   ( -70.15, 136.04) 12/08/2018   14:41:17  ( -70.13, 135.99)    3.07                31
 12/08/2018   15:31:15   (  70.04, -56.46) 12/08/2018   15:32:01  (  70.02, -56.54)    3.67                46
 12/11/2018   06:08:45   (  70.33,  84.55) 12/11/2018   06:07:33  (  70.39,  84.03)   20.58                72
 12/11/2018   06:58:18   ( -70.06,-108.21) 12/11/2018   06:58:11  ( -70.08,-108.17)    3.15                 7
 12/11/2018   07:47:44   (  70.00,  59.36) 12/11/2018   07:48:55  (  69.98,  59.30)    3.46                71
 12/13/2018   22:25:16   (  70.17,-159.80) 12/13/2018   22:24:23  (  70.14,-159.80)    3.29                53
 12/13/2018   23:14:46   ( -70.06,   7.69) 12/13/2018   23:15:05  ( -70.03,   7.68)    3.47                19