Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 12.  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   (  70.13, -44.03) 01/14/2018   14:40:57  (  70.11, -43.96)    3.50                60
 01/14/2018   15:31:27   ( -70.01, 123.44) 01/14/2018   15:31:39  ( -70.02, 123.50)    2.30                12
 01/14/2018   16:21:04   (  69.36, -69.81) 01/14/2018   16:22:12  (  69.32, -68.17)   64.43                68
 01/17/2018   06:58:25   (  70.11,  71.83) 01/17/2018   06:57:51  (  70.13,  71.78)    2.98                34
 01/17/2018   07:47:55   ( -70.00,-120.70) 01/17/2018   07:48:32  ( -69.99,-120.68)    0.97                37
 01/19/2018   22:25:19   ( -70.58,  20.75) 01/19/2018   22:24:08  ( -70.64,  19.46)   48.26                71
 01/19/2018   23:14:53   (  70.09,-172.32) 01/19/2018   23:14:44  (  70.10,-172.40)    3.55                 9
 01/20/2018   00:04:23   ( -69.98,  -4.84) 01/20/2018   00:05:25  ( -69.96,  -4.86)    2.11                62
 01/22/2018   14:41:55   ( -70.12, 135.96) 01/22/2018   14:40:52  ( -70.14, 136.02)    3.13                63
 01/22/2018   15:31:22   (  70.01, -56.55) 01/22/2018   15:31:36  (  70.03, -56.50)    2.80                14
 01/22/2018   16:21:00   ( -69.46, 110.33) 01/22/2018   16:22:09  ( -69.46, 111.65)   51.52                69
 01/25/2018   06:58:22   ( -70.09,-108.19) 01/25/2018   06:57:44  ( -70.11,-108.17)    2.78                38
 01/25/2018   07:47:49   (  69.98,  59.29) 01/25/2018   07:48:28  (  70.00,  59.31)    3.01                39