Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 12 31.  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)
 12/31/2016   22:25:40   ( -70.15,  20.12) 12/31/2016   22:24:28  ( -70.16,  20.15)    1.46                72
 12/31/2016   23:15:07   (  70.05,-172.38) 12/31/2016   23:15:12  (  70.04,-172.37)    0.69                 5
 01/01/2017   00:04:39   ( -69.82,  -5.06) 01/01/2017   00:05:51  ( -69.79,  -4.67)   15.15                72
 01/03/2017   14:42:09   ( -70.14, 135.98) 01/03/2017   14:41:22  ( -70.14, 135.95)    1.28                47
 01/03/2017   15:31:36   (  70.03, -56.52) 01/03/2017   15:32:06  (  70.03, -56.57)    1.94                30
 01/06/2017   06:08:55   (  70.88,  85.34) 01/06/2017   06:07:47  (  70.95,  83.10)   81.90                68
 01/06/2017   06:58:38   ( -70.07,-108.24) 01/06/2017   06:58:14  ( -70.07,-108.18)    2.53                24
 01/06/2017   07:48:05   (  69.96,  59.25) 01/06/2017   07:48:58  (  69.96,  59.30)    1.94                53
 01/08/2017   22:25:37   (  70.15,-159.88) 01/08/2017   22:24:26  (  70.15,-159.85)    1.22                71
 01/08/2017   23:15:07   ( -70.04,   7.61) 01/08/2017   23:15:08  ( -70.06,   7.61)    1.77                 1
 01/09/2017   00:04:37   (  69.77, 174.87) 01/09/2017   00:05:49  (  69.79, 175.33)   17.92                72
 01/11/2017   14:42:06   (  70.12, -44.04) 01/11/2017   14:41:20  (  70.14, -44.06)    2.80                46
 01/11/2017   15:31:36   ( -70.02, 123.45) 01/11/2017   15:32:01  ( -70.00, 123.48)    2.62                25