Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 10 14.  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)
 10/15/2017   22:25:42   ( -70.27,  20.31) 10/15/2017   22:24:29  ( -70.33,  19.99)   13.71                73
 10/15/2017   23:15:10   (  70.10,-172.28) 10/15/2017   23:15:11  (  70.10,-172.35)    2.56                 1
 10/16/2017   00:04:41   ( -69.94,  -4.87) 10/16/2017   00:05:52  ( -69.97,  -4.83)    2.91                71
 10/18/2017   14:42:13   ( -70.13, 135.99) 10/18/2017   14:41:17  ( -70.13, 136.06)    2.91                56
 10/18/2017   15:31:39   (  70.07, -56.45) 10/18/2017   15:32:02  (  70.06, -56.52)    2.77                23
 10/18/2017   16:21:22   ( -69.25, 110.07) 10/18/2017   16:22:30  ( -69.24, 112.00)   75.88                68
 10/21/2017   06:58:42   ( -70.15,-108.10) 10/21/2017   06:58:09  ( -70.13,-108.15)    2.55                33
 10/21/2017   07:48:09   (  70.03,  59.38) 10/21/2017   07:48:53  (  70.01,  59.35)    2.84                44
 10/23/2017   22:25:36   (  70.53,-159.29) 10/23/2017   22:24:25  (  70.55,-160.34)   38.74                71
 10/23/2017   23:15:12   ( -70.10,   7.72) 10/23/2017   23:15:00  ( -70.10,   7.68)    1.47                12
 10/24/2017   00:04:39   (  69.99, 175.20) 10/24/2017   00:05:44  (  69.98, 175.17)    1.33                65
 10/26/2017   14:42:12   (  70.15, -43.97) 10/26/2017   14:41:09  (  70.17, -43.97)    2.53                63
 10/26/2017   15:31:42   ( -70.05, 123.53) 10/26/2017   15:31:50  ( -70.04, 123.55)    1.87                 8
 10/26/2017   16:21:17   (  69.49, -69.60) 10/26/2017   16:22:26  (  69.50, -68.34)   49.18                69