Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 1 15.  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)
 01/17/2018   06:58:25   (  70.11,  71.83) 01/17/2018   06:57:51  (  70.13,  71.78)    3.25                34
 01/17/2018   07:47:55   ( -69.99,-120.70) 01/17/2018   07:48:32  ( -70.00,-120.69)    0.57                37
 01/19/2018   22:25:19   ( -70.57,  20.74) 01/19/2018   22:24:08  ( -70.64,  19.45)   48.48                71
 01/19/2018   23:14:53   (  70.09,-172.32) 01/19/2018   23:14:43  (  70.05,-172.32)    3.59                10
 01/20/2018   00:04:23   ( -69.97,  -4.85) 01/20/2018   00:05:25  ( -69.97,  -4.87)    1.15                62
 01/22/2018   14:41:54   ( -70.17, 136.03) 01/22/2018   14:40:52  ( -70.14, 136.01)    2.54                62
 01/22/2018   15:31:22   (  70.00, -56.55) 01/22/2018   15:31:36  (  70.03, -56.51)    3.39                14
 01/22/2018   16:21:00   ( -69.45, 110.32) 01/22/2018   16:22:09  ( -69.47, 111.64)   51.49                69
 01/25/2018   06:58:22   ( -70.14,-108.13) 01/25/2018   06:57:45  ( -70.12,-108.18)    2.62                37
 01/25/2018   07:47:49   (  70.03,  59.36) 01/25/2018   07:48:29  (  70.01,  59.30)    3.06                40
 01/27/2018   22:25:13   (  70.54,-159.29) 01/27/2018   22:24:02  (  70.56,-160.41)   41.30                71
 01/27/2018   23:14:49   ( -70.10,   7.71) 01/27/2018   23:14:37  ( -70.10,   7.63)    2.86                12
 01/28/2018   00:04:17   (  69.93, 175.11) 01/28/2018   00:05:20  (  69.93, 175.19)    2.89                63