Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 24.  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)
 04/25/2017   14:41:15   ( -70.16, 135.97) 04/25/2017   14:40:37  ( -70.18, 136.00)    2.41                38
 04/25/2017   15:30:42   (  70.06, -56.53) 04/25/2017   15:31:21  (  70.08, -56.53)    1.48                39
 04/28/2017   06:08:08   (  70.50,  84.70) 04/28/2017   06:06:56  (  70.56,  83.86)   32.12                72
 04/28/2017   06:57:42   ( -70.16,-108.15) 04/28/2017   06:57:32  ( -70.15,-108.17)    2.19                10
 04/28/2017   07:47:09   (  70.06,  59.35) 04/28/2017   07:48:16  (  70.04,  59.30)    2.73                67
 04/30/2017   22:24:40   (  70.21,-159.84) 04/30/2017   22:23:45  (  70.21,-159.82)    0.62                55
 04/30/2017   23:14:10   ( -70.10,   7.64) 04/30/2017   23:14:27  ( -70.11,   7.65)    1.25                17
 05/01/2017   00:03:50   (  69.27, 174.16) 05/01/2017   00:04:57  (  69.26, 176.21)   80.78                67
 05/03/2017   14:41:06   (  70.19, -43.98) 05/03/2017   14:40:39  (  70.18, -44.00)    1.17                27
 05/03/2017   15:30:36   ( -70.08, 123.50) 05/03/2017   15:31:21  ( -70.08, 123.47)    1.27                45
 05/06/2017   06:08:05   ( -70.33, -95.54) 05/06/2017   06:06:52  ( -70.36, -95.82)   11.11                73
 05/06/2017   06:57:33   (  70.16,  71.86) 05/06/2017   06:57:34  (  70.15,  71.81)    2.03                 1
 05/06/2017   07:47:03   ( -70.06,-120.65) 05/06/2017   07:48:16  ( -70.05,-120.72)    2.54                73