Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 8 30.  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)
 08/31/2017   14:42:01   ( -70.14, 136.04) 08/31/2017   14:41:07  ( -70.13, 136.04)    0.81                54
 08/31/2017   15:31:28   (  70.04, -56.46) 08/31/2017   15:31:51  (  70.02, -56.48)    2.07                23
 08/31/2017   16:21:12   ( -69.16, 109.98) 08/31/2017   16:22:19  ( -69.18, 112.05)   82.22                67
 09/03/2017   06:58:31   ( -70.11,-108.13) 09/03/2017   06:58:04  ( -70.12,-108.18)    2.91                27
 09/03/2017   07:47:58   (  70.00,  59.37) 09/03/2017   07:48:48  (  70.01,  59.29)    3.18                50
 09/05/2017   22:25:31   (  70.17,-159.79) 09/05/2017   22:24:18  (  70.16,-159.80)    1.00                73
 09/05/2017   23:15:01   ( -70.06,   7.70) 09/05/2017   23:15:00  ( -70.06,   7.67)    0.90                 1
 09/06/2017   00:04:30   (  69.84, 175.03) 09/06/2017   00:05:42  (  69.85, 175.31)   10.51                72
 09/08/2017   14:42:01   (  70.12, -43.97) 09/08/2017   14:41:14  (  70.11, -43.94)    2.03                47
 09/08/2017   15:31:31   ( -70.02, 123.51) 09/08/2017   15:31:56  ( -70.01, 123.53)    1.56                25
 09/11/2017   06:08:49   ( -70.95, -94.51) 09/11/2017   06:07:41  ( -71.00, -96.92)   87.65                68
 09/11/2017   06:58:30   (  70.07,  71.83) 09/11/2017   06:58:09  (  70.05,  71.90)    3.11                21
 09/11/2017   07:48:00   ( -69.97,-120.68) 09/11/2017   07:48:51  ( -69.95,-120.63)    2.65                51