Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 14.  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   (  70.12, -44.00) 12/16/2018   14:41:17  (  70.13, -44.03)    2.30                28
 12/16/2018   15:31:15   ( -70.00, 123.47) 12/16/2018   15:31:58  ( -69.99, 123.51)    2.41                43
 12/19/2018   06:08:44   ( -70.35, -95.43) 12/19/2018   06:07:31  ( -70.41, -96.00)   22.33                73
 12/19/2018   06:58:14   (  70.07,  71.82) 12/19/2018   06:58:11  (  70.09,  71.80)    2.22                 3
 12/19/2018   07:47:44   ( -69.97,-120.70) 12/19/2018   07:48:52  ( -69.94,-120.65)    3.23                68
 12/21/2018   22:25:16   ( -70.14,  20.16) 12/21/2018   22:24:21  ( -70.16,  20.16)    1.71                55
 12/21/2018   23:14:43   (  70.03,-172.36) 12/21/2018   23:15:05  (  70.05,-172.37)    2.80                22
 12/22/2018   00:04:26   ( -69.21,  -5.84) 12/22/2018   00:05:33  ( -69.21,  -3.82)   79.55                67
 12/24/2018   14:41:45   ( -70.10, 135.98) 12/24/2018   14:41:15  ( -70.12, 135.99)    2.27                30
 12/24/2018   15:31:12   (  69.98, -56.54) 12/24/2018   15:31:58  (  69.97, -56.47)    3.29                46
 12/27/2018   06:08:41   (  70.26,  84.46) 12/27/2018   06:07:28  (  70.30,  84.17)   11.73                73
 12/27/2018   06:58:12   ( -70.11,-108.13) 12/27/2018   06:58:08  ( -70.08,-108.18)    3.40                 4
 12/27/2018   07:47:40   (  69.93,  59.28) 12/27/2018   07:48:51  (  69.93,  59.35)    2.96                71