Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 27.  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)
 04/28/2017   06:08:07   (  70.54,  84.89) 04/28/2017   06:06:56  (  70.57,  83.84)   39.22                71
 04/28/2017   06:57:43   ( -70.10,-108.11) 04/28/2017   06:57:31  ( -70.11,-108.11)    1.18                12
 04/28/2017   07:47:10   (  69.99,  59.38) 04/28/2017   07:48:15  (  70.00,  59.36)    0.98                65
 04/30/2017   22:24:41   (  70.19,-159.73) 04/30/2017   22:23:44  (  70.17,-159.75)    2.57                57
 04/30/2017   23:14:11   ( -70.08,   7.76) 04/30/2017   23:14:26  ( -70.07,   7.71)    2.24                15
 05/01/2017   00:03:50   (  69.31, 174.34) 05/01/2017   00:04:58  (  69.32, 176.12)   70.01                68
 05/03/2017   14:41:10   (  70.11, -43.95) 05/03/2017   14:40:39  (  70.13, -43.93)    2.71                31
 05/03/2017   15:30:40   ( -70.01, 123.54) 05/03/2017   15:31:21  ( -70.04, 123.53)    3.04                41
 05/06/2017   06:08:06   ( -70.42, -95.25) 05/06/2017   06:06:54  ( -70.47, -96.00)   28.49                72
 05/06/2017   06:57:37   (  70.08,  71.90) 05/06/2017   06:57:33  (  70.10,  71.89)    2.44                 4
 05/06/2017   07:47:07   ( -69.98,-120.60) 05/06/2017   07:48:15  ( -70.00,-120.65)    2.81                68
 05/08/2017   22:24:38   ( -70.17,  20.28) 05/08/2017   22:23:44  ( -70.18,  20.23)    2.10                54
 05/08/2017   23:14:05   (  70.05,-172.25) 05/08/2017   23:14:27  (  70.02,-172.22)    3.29                22
 05/09/2017   00:03:49   ( -69.18,  -5.80) 05/09/2017   00:04:56  ( -69.23,  -3.75)   80.96                67
 05/11/2017   14:41:06   ( -70.13, 136.12) 05/11/2017   14:40:39  ( -70.15, 136.04)    3.46                27
 05/11/2017   15:30:33   (  70.01, -56.41) 05/11/2017   15:31:22  (  69.99, -56.41)    1.76                49