Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 5.  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)
 12/05/2018   22:25:20   ( -70.14,  20.15) 12/05/2018   22:24:22  ( -70.13,  20.23)    3.36                58
 12/05/2018   23:14:47   (  70.04,-172.36) 12/05/2018   23:15:07  (  70.06,-172.37)    2.82                20
 12/06/2018   00:04:28   ( -69.32,  -5.70) 12/06/2018   00:05:36  ( -69.29,  -3.91)   70.45                68
 12/08/2018   14:41:49   ( -70.11, 135.99) 12/08/2018   14:41:17  ( -70.12, 136.00)    1.34                32
 12/08/2018   15:31:16   (  70.01, -56.52) 12/08/2018   15:32:01  (  70.01, -56.52)    0.64                45
 12/11/2018   06:08:46   (  70.30,  84.50) 12/11/2018   06:07:33  (  70.38,  84.05)   19.16                73
 12/11/2018   06:58:18   ( -70.08,-108.18) 12/11/2018   06:58:11  ( -70.07,-108.15)    1.32                 7
 12/11/2018   07:47:45   (  69.97,  59.31) 12/11/2018   07:48:55  (  69.96,  59.32)    0.91                70
 12/13/2018   22:25:16   (  70.15,-159.83) 12/13/2018   22:24:23  (  70.17,-159.86)    3.12                53
 12/13/2018   23:14:46   ( -70.04,   7.65) 12/13/2018   23:15:04  ( -70.02,   7.69)    3.01                18
 12/14/2018   00:04:27   (  69.16, 174.10) 12/14/2018   00:05:34  (  69.17, 176.24)   84.77                67
 12/16/2018   14:41:45   (  70.10, -44.01) 12/16/2018   14:41:17  (  70.13, -44.02)    2.79                28
 12/16/2018   15:31:15   ( -70.00, 123.48) 12/16/2018   15:31:59  ( -70.02, 123.46)    2.52                44