Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 28.  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)
 09/29/2017   22:25:39   ( -70.18,  20.19) 09/29/2017   22:24:31  ( -70.15,  20.19)    3.14                68
 09/29/2017   23:15:06   (  70.08,-172.31) 09/29/2017   23:15:16  (  70.07,-172.38)    3.00                10
 09/30/2017   00:04:41   ( -69.69,  -5.21) 09/30/2017   00:05:52  ( -69.68,  -4.47)   28.59                71
 10/02/2017   14:42:10   ( -70.13, 136.00) 10/02/2017   14:41:27  ( -70.11, 136.01)    1.56                43
 10/02/2017   15:31:37   (  70.02, -56.50) 10/02/2017   15:32:12  (  70.04, -56.57)    3.12                35
 10/05/2017   06:09:01   (  70.73,  85.13) 10/05/2017   06:07:52  (  70.75,  83.46)   61.15                69
 10/05/2017   06:58:41   ( -70.07,-108.20) 10/05/2017   06:58:23  ( -70.08,-108.17)    1.72                18
 10/05/2017   07:48:08   (  69.96,  59.29) 10/05/2017   07:49:07  (  69.96,  59.33)    1.49                59
 10/07/2017   22:25:41   (  70.17,-159.82) 10/07/2017   22:24:37  (  70.14,-159.81)    3.18                64
 10/07/2017   23:15:10   ( -70.07,   7.67) 10/07/2017   23:15:18  ( -70.06,   7.64)    1.51                 8
 10/08/2017   00:04:45   (  69.51, 174.55) 10/08/2017   00:05:54  (  69.51, 175.76)   47.23                69
 10/10/2017   14:42:11   (  70.10, -44.04) 10/10/2017   14:41:32  (  70.12, -44.00)    2.49                39
 10/10/2017   15:31:41   ( -70.00, 123.45) 10/10/2017   15:32:14  ( -70.03, 123.45)    3.54                33