Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 22.  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)
 04/22/2017   23:14:14   (  70.13,-172.31) 04/22/2017   23:14:26  (  70.10,-172.33)    3.44                12
 04/23/2017   00:03:51   ( -69.63,  -5.37) 04/23/2017   00:05:01  ( -69.63,  -4.32)   41.00                70
 04/25/2017   14:41:15   ( -70.18, 136.00) 04/25/2017   14:40:37  ( -70.17, 136.03)    2.16                38
 04/25/2017   15:30:42   (  70.08, -56.51) 04/25/2017   15:31:21  (  70.06, -56.50)    2.13                39
 04/28/2017   06:08:08   (  70.51,  84.72) 04/28/2017   06:06:57  (  70.60,  83.80)   35.48                71
 04/28/2017   06:57:43   ( -70.13,-108.20) 04/28/2017   06:57:32  ( -70.13,-108.14)    2.11                11
 04/28/2017   07:47:10   (  70.02,  59.29) 04/28/2017   07:48:16  (  70.02,  59.33)    1.38                66
 04/30/2017   22:24:39   (  70.23,-159.81) 04/30/2017   22:23:45  (  70.24,-159.87)    3.09                54
 04/30/2017   23:14:09   ( -70.12,   7.67) 04/30/2017   23:14:26  ( -70.09,   7.68)    3.42                17
 05/01/2017   00:03:50   (  69.23, 174.11) 05/01/2017   00:04:56  (  69.24, 176.24)   83.93                66
 05/03/2017   14:41:07   (  70.15, -44.03) 05/03/2017   14:40:39  (  70.16, -43.97)    2.54                28
 05/03/2017   15:30:37   ( -70.05, 123.45) 05/03/2017   15:31:21  ( -70.06, 123.51)    2.11                44
 05/06/2017   06:08:05   ( -70.35, -95.51) 05/06/2017   06:06:53  ( -70.39, -95.86)   13.81                72
 05/06/2017   06:57:34   (  70.13,  71.81) 05/06/2017   06:57:34  (  70.13,  71.85)    1.42                 0
 05/06/2017   07:47:04   ( -70.03,-120.70) 05/06/2017   07:48:16  ( -70.02,-120.68)    0.92                72