Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 11.  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)
 04/12/2017   06:08:09   (  71.05,  85.55) 04/12/2017   06:07:02  (  71.06,  83.04)   90.31                67
 04/12/2017   06:57:53   ( -70.17,-108.14) 04/12/2017   06:57:29  ( -70.17,-108.20)    2.35                24
 04/12/2017   07:47:21   (  70.01,  59.28) 04/12/2017   07:48:12  (  70.01,  59.35)    2.72                51
 04/14/2017   22:24:52   (  70.20,-159.84) 04/14/2017   22:23:42  (  70.22,-159.82)    2.31                70
 04/14/2017   23:14:22   ( -70.09,   7.63) 04/14/2017   23:14:24  ( -70.12,   7.65)    3.23                 2
 04/15/2017   00:03:51   (  69.82, 174.89) 04/15/2017   00:05:03  (  69.80, 175.44)   20.91                72
 04/17/2017   14:41:19   (  70.17, -44.01) 04/17/2017   14:40:36  (  70.17, -43.98)    1.12                43
 04/17/2017   15:30:49   ( -70.06, 123.47) 04/17/2017   15:31:18  ( -70.07, 123.50)    1.11                29
 04/20/2017   06:08:09   ( -70.85, -94.77) 04/20/2017   06:07:00  ( -70.90, -96.69)   70.27                69
 04/20/2017   06:57:47   (  70.14,  71.82) 04/20/2017   06:57:31  (  70.12,  71.87)    2.47                16
 04/20/2017   07:47:17   ( -70.03,-120.69) 04/20/2017   07:48:13  ( -70.01,-120.65)    2.66                56
 04/22/2017   22:24:48   ( -70.22,  20.17) 04/22/2017   22:23:43  ( -70.22,  20.17)    0.77                65
 04/22/2017   23:14:15   (  70.10,-172.35) 04/22/2017   23:14:27  (  70.13,-172.37)    3.02                12
 04/23/2017   00:03:51   ( -69.67,  -5.32) 04/23/2017   00:05:02  ( -69.65,  -4.34)   37.88                71
 04/25/2017   14:41:16   ( -70.18, 135.99) 04/25/2017   14:40:38  ( -70.18, 136.01)    0.61                38
 04/25/2017   15:30:42   (  70.06, -56.53) 04/25/2017   15:31:21  (  70.08, -56.54)    2.41                39