Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 7.  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)
 04/09/2017   14:41:25   ( -70.19, 136.01) 04/09/2017   14:40:33  ( -70.17, 136.03)    1.67                52
 04/09/2017   15:30:52   (  70.08, -56.49) 04/09/2017   15:31:17  (  70.07, -56.50)    1.64                25
 04/09/2017   16:20:37   ( -69.14, 109.87) 04/09/2017   16:21:43  ( -69.12, 112.20)   92.37                66
 04/12/2017   06:08:09   (  71.05,  85.54) 04/12/2017   06:07:02  (  71.06,  83.04)   90.29                67
 04/12/2017   06:57:53   ( -70.17,-108.14) 04/12/2017   06:57:29  ( -70.17,-108.20)    2.25                24
 04/12/2017   07:47:21   (  70.01,  59.28) 04/12/2017   07:48:12  (  70.02,  59.35)    2.87                51
 04/14/2017   22:24:52   (  70.20,-159.85) 04/14/2017   22:23:42  (  70.22,-159.83)    3.05                70
 04/14/2017   23:14:21   ( -70.09,   7.63) 04/14/2017   23:14:23  ( -70.12,   7.66)    2.94                 2
 04/15/2017   00:03:51   (  69.81, 174.89) 04/15/2017   00:05:03  (  69.81, 175.43)   20.89                72
 04/17/2017   14:41:19   (  70.17, -44.01) 04/17/2017   14:40:36  (  70.18, -43.98)    1.55                43
 04/17/2017   15:30:49   ( -70.06, 123.47) 04/17/2017   15:31:18  ( -70.07, 123.50)    1.18                29
 04/20/2017   06:08:09   ( -70.85, -94.77) 04/20/2017   06:07:00  ( -70.90, -96.69)   70.27                69
 04/20/2017   06:57:47   (  70.13,  71.81) 04/20/2017   06:57:31  (  70.13,  71.86)    1.62                16
 04/20/2017   07:47:17   ( -70.03,-120.70) 04/20/2017   07:48:13  ( -70.02,-120.66)    2.03                56