Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 4.  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)
 04/06/2017   22:24:54   ( -70.37,  20.40) 04/06/2017   22:23:42  ( -70.43,  19.86)   21.43                72
 04/06/2017   23:14:24   (  70.11,-172.34) 04/06/2017   23:14:22  (  70.12,-172.34)    1.54                 2
 04/07/2017   00:03:54   ( -69.99,  -4.86) 04/07/2017   00:05:04  ( -70.02,  -4.87)    2.69                70
 04/09/2017   14:41:25   ( -70.20, 136.03) 04/09/2017   14:40:34  ( -70.22, 135.96)    3.23                51
 04/09/2017   15:30:52   (  70.09, -56.48) 04/09/2017   15:31:17  (  70.06, -56.49)    2.98                25
 04/09/2017   16:20:37   ( -69.16, 109.89) 04/09/2017   16:21:43  ( -69.11, 112.21)   92.36                66
 04/12/2017   06:08:09   (  71.05,  85.56) 04/12/2017   06:07:03  (  71.11,  82.96)   93.73                66
 04/12/2017   06:57:53   ( -70.18,-108.12) 04/12/2017   06:57:29  ( -70.16,-108.18)    3.28                24
 04/12/2017   07:47:21   (  70.02,  59.29) 04/12/2017   07:48:12  (  70.01,  59.36)    2.58                51
 04/14/2017   22:24:51   (  70.21,-159.83) 04/14/2017   22:23:41  (  70.22,-159.82)    1.36                70
 04/14/2017   23:14:21   ( -70.11,   7.65) 04/14/2017   23:14:23  ( -70.11,   7.67)    0.69                 2
 04/15/2017   00:03:52   (  69.77, 174.83) 04/15/2017   00:05:03  (  69.80, 175.44)   23.77                71
 04/17/2017   14:41:19   (  70.18, -44.00) 04/17/2017   14:40:36  (  70.17, -43.98)    1.10                43
 04/17/2017   15:30:49   ( -70.08, 123.49) 04/17/2017   15:31:18  ( -70.06, 123.51)    2.39                29