Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 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)
 09/16/2017   14:42:02   ( -70.15, 136.05) 09/16/2017   14:41:18  ( -70.14, 136.00)    2.17                44
 09/16/2017   15:31:30   (  69.99, -56.53) 09/16/2017   15:32:02  (  70.02, -56.51)    3.40                32
 09/19/2017   06:08:53   (  70.76,  85.21) 09/19/2017   06:07:44  (  70.81,  83.37)   67.34                69
 09/19/2017   06:58:33   ( -70.11,-108.12) 09/19/2017   06:58:14  ( -70.09,-108.16)    2.60                19
 09/19/2017   07:48:01   (  69.95,  59.29) 09/19/2017   07:48:58  (  69.97,  59.33)    2.97                57
 09/21/2017   22:25:34   (  70.17,-159.79) 09/21/2017   22:24:29  (  70.19,-159.87)    3.43                65
 09/21/2017   23:15:04   ( -70.07,   7.69) 09/21/2017   23:15:10  ( -70.05,   7.67)    2.59                 6
 09/22/2017   00:04:37   (  69.63, 174.73) 09/22/2017   00:05:48  (  69.61, 175.63)   35.11                71
 09/24/2017   14:42:05   (  70.12, -43.98) 09/24/2017   14:41:24  (  70.10, -43.96)    2.97                41
 09/24/2017   15:31:35   ( -70.02, 123.51) 09/24/2017   15:32:06  ( -70.01, 123.50)    1.80                31
 09/27/2017   06:08:57   ( -70.78, -94.78) 09/27/2017   06:07:48  ( -70.86, -96.71)   71.18                69
 09/27/2017   06:58:35   (  70.07,  71.82) 09/27/2017   06:58:19  (  70.06,  71.86)    2.02                16
 09/27/2017   07:48:05   ( -69.97,-120.69) 09/27/2017   07:49:01  ( -69.97,-120.68)    0.56                56