Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 10 20.  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)
 10/21/2018   14:41:47   ( -70.16, 136.05) 10/21/2018   14:41:18  ( -70.17, 136.03)    1.25                29
 10/21/2018   15:31:14   (  70.06, -56.45) 10/21/2018   15:32:02  (  70.04, -56.47)    1.58                48
 10/24/2018   06:08:46   (  70.32,  84.52) 10/24/2018   06:07:33  (  70.38,  84.16)   14.91                73
 10/24/2018   06:58:17   ( -70.15,-108.08) 10/24/2018   06:58:12  ( -70.14,-108.15)    3.17                 5
 10/24/2018   07:47:45   (  69.99,  59.33) 10/24/2018   07:48:56  (  70.01,  59.35)    2.40                71
 10/26/2018   22:25:18   (  70.19,-159.78) 10/26/2018   22:24:24  (  70.19,-159.78)    0.37                54
 10/26/2018   23:14:48   ( -70.09,   7.70) 10/26/2018   23:15:06  ( -70.10,   7.67)    2.41                18
 10/27/2018   00:04:29   (  69.20, 174.14) 10/27/2018   00:05:35  (  69.18, 176.32)   86.13                66
 10/29/2018   14:41:47   (  70.17, -43.94) 10/29/2018   14:41:17  (  70.16, -43.97)    1.51                30
 10/29/2018   15:31:17   ( -70.07, 123.55) 10/29/2018   15:31:59  ( -70.07, 123.48)    2.79                42
 11/01/2018   06:08:45   ( -70.53, -95.18) 11/01/2018   06:07:34  ( -70.62, -96.23)   40.27                71
 11/01/2018   06:58:17   (  70.14,  71.91) 11/01/2018   06:58:11  (  70.14,  71.84)    2.71                 6
 11/01/2018   07:47:48   ( -69.99,-120.68) 11/01/2018   07:48:52  ( -69.99,-120.63)    2.19                64