Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 1 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)
 01/20/2020   15:31:32   ( -70.08, 123.55) 01/20/2020   15:30:57  ( -70.06, 123.57)    1.85                35
 01/20/2020   16:20:59   (  69.97, -68.95) 01/20/2020   16:21:41  (  69.95, -68.96)    2.03                42
 01/23/2020   06:58:26   (  70.42,  72.30) 01/23/2020   06:57:14  (  70.48,  71.38)   34.57                72
 01/23/2020   07:48:01   ( -70.04,-120.62) 01/23/2020   07:47:50  ( -70.06,-120.66)    2.80                11
 01/23/2020   08:37:28   (  69.93,  46.87) 01/23/2020   08:38:33  (  69.90,  46.89)    3.18                65
 01/25/2020   23:15:00   (  70.11,-172.28) 01/25/2020   23:14:00  (  70.11,-172.27)    0.87                60
 01/26/2020   00:04:30   ( -70.00,  -4.79) 01/26/2020   00:04:42  ( -70.01,  -4.80)    1.40                12
 01/26/2020   00:54:07   (  69.34, 161.94) 01/26/2020   00:55:15  (  69.32, 163.52)   61.73                68
 01/28/2020   15:31:28   (  70.06, -56.47) 01/28/2020   15:30:51  (  70.07, -56.42)    1.84                37
 01/28/2020   16:20:58   ( -69.96, 111.02) 01/28/2020   16:21:33  ( -69.97, 111.05)    1.28                35
 01/31/2020   06:58:20   ( -70.67,-107.33) 01/31/2020   06:57:10  ( -70.70,-108.95)   59.57                70
 01/31/2020   07:47:57   (  70.01,  59.35) 01/31/2020   07:47:43  (  70.02,  59.42)    3.36                14
 01/31/2020   08:37:27   ( -69.91,-133.16) 01/31/2020   08:38:25  ( -69.92,-133.10)    2.46                58
 02/02/2020   23:14:58   ( -70.13,   7.75) 02/02/2020   23:13:52  ( -70.13,   7.73)    0.89                66
 02/03/2020   00:04:25   (  70.01, 175.23) 02/03/2020   00:04:36  (  70.03, 175.19)    3.11                11
 02/03/2020   00:54:01   ( -69.58, -17.73) 02/03/2020   00:55:12  ( -69.61, -16.87)   33.51                71