Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 13.  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)
 01/14/2018   14:41:57   (  70.14, -44.01) 01/14/2018   14:40:58  (  70.15, -44.02)    1.01                59
 01/14/2018   15:31:27   ( -70.02, 123.46) 01/14/2018   15:31:39  ( -70.01, 123.51)    2.55                12
 01/14/2018   16:21:04   (  69.37, -69.79) 01/14/2018   16:22:13  (  69.36, -68.23)   61.27                69
 01/17/2018   06:58:25   (  70.12,  71.85) 01/17/2018   06:57:51  (  70.12,  71.80)    1.73                34
 01/17/2018   07:47:55   ( -70.01,-120.68) 01/17/2018   07:48:32  ( -69.98,-120.67)    3.14                37
 01/19/2018   22:25:19   ( -70.59,  20.76) 01/19/2018   22:24:08  ( -70.63,  19.47)   47.91                71
 01/19/2018   23:14:53   (  70.10,-172.30) 01/19/2018   23:14:44  (  70.09,-172.38)    2.97                 9
 01/20/2018   00:04:24   ( -69.93,  -4.90) 01/20/2018   00:05:25  ( -69.95,  -4.85)    3.03                61
 01/22/2018   14:41:55   ( -70.12, 135.97) 01/22/2018   14:40:52  ( -70.13, 136.03)    2.45                63
 01/22/2018   15:31:21   (  70.01, -56.54) 01/22/2018   15:31:35  (  70.02, -56.49)    2.04                14
 01/22/2018   16:20:59   ( -69.47, 110.34) 01/22/2018   16:22:08  ( -69.45, 111.67)   51.77                69
 01/25/2018   06:58:22   ( -70.09,-108.19) 01/25/2018   06:57:44  ( -70.10,-108.15)    1.86                38
 01/25/2018   07:47:49   (  69.98,  59.30) 01/25/2018   07:48:28  (  69.99,  59.33)    1.71                39