Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 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)
 09/27/2017   06:08:58   ( -70.81, -94.74) 09/27/2017   06:07:49  ( -70.87, -96.73)   73.18                69
 09/27/2017   06:58:37   (  70.06,  71.80) 09/27/2017   06:58:20  (  70.06,  71.86)    2.49                17
 09/27/2017   07:48:06   ( -70.00,-120.65) 09/27/2017   07:49:02  ( -69.98,-120.70)    2.59                56
 09/29/2017   22:25:39   ( -70.17,  20.19) 09/29/2017   22:24:31  ( -70.15,  20.19)    2.04                68
 09/29/2017   23:15:06   (  70.07,-172.31) 09/29/2017   23:15:16  (  70.08,-172.39)    3.15                10
 09/30/2017   00:04:41   ( -69.68,  -5.22) 09/30/2017   00:05:52  ( -69.68,  -4.48)   28.66                71
 10/02/2017   14:42:10   ( -70.12, 135.99) 10/02/2017   14:41:27  ( -70.12, 136.01)    0.82                43
 10/02/2017   15:31:37   (  70.02, -56.51) 10/02/2017   15:32:11  (  69.99, -56.49)    2.76                34
 10/05/2017   06:09:01   (  70.72,  85.12) 10/05/2017   06:07:52  (  70.75,  83.46)   61.11                69
 10/05/2017   06:58:41   ( -70.07,-108.21) 10/05/2017   06:58:23  ( -70.09,-108.17)    2.48                18
 10/05/2017   07:48:08   (  69.96,  59.28) 10/05/2017   07:49:07  (  69.96,  59.32)    1.54                59
 10/07/2017   22:25:41   (  70.16,-159.83) 10/07/2017   22:24:37  (  70.14,-159.81)    2.35                64
 10/07/2017   23:15:11   ( -70.06,   7.66) 10/07/2017   23:15:19  ( -70.06,   7.64)    0.89                 8
 10/08/2017   00:04:46   (  69.51, 174.54) 10/08/2017   00:05:55  (  69.51, 175.76)   47.36                69
 10/10/2017   14:42:11   (  70.10, -44.05) 10/10/2017   14:41:32  (  70.12, -44.01)    3.14                39
 10/10/2017   15:31:40   ( -70.05, 123.52) 10/10/2017   15:32:14  ( -70.03, 123.45)    3.45                34