Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 10 18.  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)
 10/18/2020   14:42:12   (  70.26, -43.79) 10/18/2020   14:40:59  (  70.28, -44.13)   12.83                73
 10/18/2020   15:31:44   ( -70.03, 123.52) 10/18/2020   15:31:38  ( -70.04, 123.57)    1.96                 6
 10/18/2020   16:21:11   (  69.93, -68.98) 10/18/2020   16:22:22  (  69.92, -68.95)    2.04                71
 10/21/2020   06:58:42   (  70.15,  71.93) 10/21/2020   06:57:49  (  70.13,  71.88)    3.34                53
 10/21/2020   07:48:12   ( -70.04,-120.60) 10/21/2020   07:48:31  ( -70.04,-120.66)    2.48                19
 10/21/2020   08:37:54   (  69.11,  45.79) 10/21/2020   08:39:00  (  69.12,  47.97)   86.66                66
 10/23/2020   23:15:12   (  70.09,-172.27) 10/23/2020   23:14:42  (  70.08,-172.27)    1.89                30
 10/24/2020   00:04:42   ( -69.98,  -4.79) 10/24/2020   00:05:24  ( -69.98,  -4.82)    0.81                42
 10/26/2020   14:42:09   ( -70.47, 136.51) 10/26/2020   14:40:58  ( -70.51, 135.52)   36.91                71
 10/26/2020   15:31:42   (  70.03, -56.48) 10/26/2020   15:31:35  (  70.03, -56.43)    2.04                 7
 10/26/2020   16:21:12   ( -69.92, 111.00) 10/26/2020   16:22:17  ( -69.94, 111.03)    1.71                65
 10/29/2020   06:58:44   ( -70.13,-108.10) 10/29/2020   06:57:45  ( -70.14,-108.14)    2.20                59
 10/29/2020   07:48:11   (  70.02,  59.39) 10/29/2020   07:48:29  (  70.03,  59.33)    2.62                18
 10/29/2020   08:37:51   ( -69.36,-133.88) 10/29/2020   08:39:00  ( -69.36,-132.36)   59.66                69
 10/31/2020   23:15:12   ( -70.11,   7.76) 10/31/2020   23:14:37  ( -70.10,   7.70)    2.99                35
 11/01/2020   00:04:39   (  70.00, 175.25) 11/01/2020   00:05:21  (  69.99, 175.17)    3.09                42