Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 12 26.  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)
 12/26/2017   22:25:32   (  70.37,-159.56) 12/26/2017   22:24:20  (  70.45,-160.28)   28.22                72
 12/26/2017   23:15:05   ( -70.09,   7.67) 12/26/2017   23:14:57  ( -70.09,   7.60)    2.71                 8
 12/27/2017   00:04:33   (  69.93, 175.09) 12/27/2017   00:05:40  (  69.93, 175.15)    2.26                67
 12/29/2017   14:42:03   (  70.17, -43.97) 12/29/2017   14:41:07  (  70.14, -44.03)    3.39                56
 12/29/2017   15:31:33   ( -70.05, 123.50) 12/29/2017   15:31:49  ( -70.04, 123.44)    2.46                16
 12/29/2017   16:21:13   (  69.23, -69.98) 12/29/2017   16:22:20  (  69.25, -68.09)   74.50                67
 01/01/2018   06:58:32   (  70.12,  71.84) 01/01/2018   06:58:00  (  70.10,  71.81)    2.42                32
 01/01/2018   07:48:02   ( -70.01,-120.68) 01/01/2018   07:48:42  ( -70.00,-120.73)    1.89                40
 01/03/2018   22:25:28   ( -70.51,  20.64) 01/03/2018   22:24:17  ( -70.59,  19.51)   42.87                71
 01/03/2018   23:15:01   (  70.07,-172.35) 01/03/2018   23:14:53  (  70.07,-172.36)    0.71                 8
 01/04/2018   00:04:31   ( -69.96,  -4.87) 01/04/2018   00:05:35  ( -69.97,  -4.89)    1.08                64
 01/06/2018   14:42:03   ( -70.13, 135.97) 01/06/2018   14:41:02  ( -70.14, 136.00)    1.50                61
 01/06/2018   15:31:30   (  70.01, -56.55) 01/06/2018   15:31:46  (  70.04, -56.54)    2.26                16
 01/06/2018   16:21:09   ( -69.42, 110.27) 01/06/2018   16:22:18  ( -69.40, 111.71)   56.43                69