Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 12 13.  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)
 12/13/2016   06:09:01   ( -70.87, -94.68) 12/13/2016   06:07:53  ( -70.92, -96.85)   79.05                68
 12/13/2016   06:58:41   (  70.06,  71.77) 12/13/2016   06:58:23  (  70.09,  71.80)    3.40                18
 12/13/2016   07:48:10   ( -70.00,-120.69) 12/13/2016   07:49:05  ( -69.99,-120.73)    2.18                55
 12/15/2016   22:25:42   ( -70.17,  20.16) 12/15/2016   22:24:33  ( -70.16,  20.15)    1.64                69
 12/15/2016   23:15:09   (  70.07,-172.34) 12/15/2016   23:15:17  (  70.06,-172.38)    2.15                 8
 12/16/2016   00:04:43   ( -69.74,  -5.17) 12/16/2016   00:05:55  ( -69.74,  -4.60)   22.04                72
 12/18/2016   14:42:11   ( -70.13, 135.98) 12/18/2016   14:41:27  ( -70.13, 135.97)    0.44                44
 12/18/2016   15:31:38   (  70.02, -56.53) 12/18/2016   15:32:11  (  70.03, -56.57)    1.97                33
 12/21/2016   06:08:58   (  70.78,  85.20) 12/21/2016   06:07:50  (  70.84,  83.29)   69.93                68
 12/21/2016   06:58:39   ( -70.07,-108.21) 12/21/2016   06:58:20  ( -70.10,-108.22)    2.88                19
 12/21/2016   07:48:06   (  69.96,  59.28) 12/21/2016   07:49:03  (  69.95,  59.32)    2.30                57
 12/23/2016   22:25:37   (  70.17,-159.82) 12/23/2016   22:24:32  (  70.18,-159.89)    2.74                65
 12/23/2016   23:15:07   ( -70.07,   7.67) 12/23/2016   23:15:14  ( -70.07,   7.59)    2.76                 7
 12/24/2016   00:04:41   (  69.57, 174.62) 12/24/2016   00:05:51  (  69.60, 175.60)   38.28                70
 12/26/2016   14:42:06   (  70.11, -44.03) 12/26/2016   14:41:25  (  70.11, -44.00)    1.10                41
 12/26/2016   15:31:36   ( -70.01, 123.46) 12/26/2016   15:32:07  ( -70.00, 123.48)    1.51                31