Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 20.  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)
 01/22/2018   14:41:54   ( -70.15, 136.01) 01/22/2018   14:40:52  ( -70.16, 135.99)    1.18                62
 01/22/2018   15:31:21   (  70.05, -56.49) 01/22/2018   15:31:36  (  70.04, -56.52)    1.73                15
 01/22/2018   16:20:59   ( -69.49, 110.37) 01/22/2018   16:22:09  ( -69.48, 111.62)   48.61                70
 01/25/2018   06:58:22   ( -70.12,-108.15) 01/25/2018   06:57:45  ( -70.14,-108.20)    2.51                37
 01/25/2018   07:47:49   (  70.02,  59.34) 01/25/2018   07:48:29  (  70.02,  59.29)    2.14                40
 01/27/2018   22:25:13   (  70.52,-159.32) 01/27/2018   22:24:02  (  70.57,-160.43)   41.46                71
 01/27/2018   23:14:49   ( -70.09,   7.68) 01/27/2018   23:14:36  ( -70.06,   7.69)    2.37                13
 01/28/2018   00:04:16   (  69.98, 175.17) 01/28/2018   00:05:20  (  69.95, 175.17)    3.41                64
 01/30/2018   14:41:47   (  70.15, -43.98) 01/30/2018   14:40:47  (  70.13, -43.96)    1.88                60
 01/30/2018   15:31:17   ( -70.04, 123.50) 01/30/2018   15:31:29  ( -70.05, 123.49)    0.63                12
 01/30/2018   16:20:54   (  69.38, -69.76) 01/30/2018   16:22:03  (  69.40, -68.25)   59.24                69
 02/02/2018   06:58:15   (  70.10,  71.83) 02/02/2018   06:57:40  (  70.12,  71.83)    2.41                35
 02/02/2018   07:47:45   ( -70.00,-120.68) 02/02/2018   07:48:21  ( -69.98,-120.63)    2.59                36