Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 1 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)
 01/19/2021   23:15:02   ( -70.06,   7.66) 01/19/2021   23:14:16  ( -70.07,   7.70)    2.27                46
 01/20/2021   00:04:29   (  69.95, 175.16) 01/20/2021   00:05:00  (  69.96, 175.17)    1.15                31
 01/22/2021   14:41:49   (  70.74, -43.08) 01/22/2021   14:40:41  (  70.78, -44.98)   69.78                68
 01/22/2021   15:31:30   ( -70.03, 123.50) 01/22/2021   15:31:11  ( -70.05, 123.50)    2.64                19
 01/22/2021   16:20:57   (  69.92, -69.00) 01/22/2021   16:21:55  (  69.95, -69.04)    3.02                58
 01/25/2021   06:58:28   (  70.11,  71.86) 01/25/2021   06:57:23  (  70.09,  71.89)    2.30                65
 01/25/2021   07:47:58   ( -70.00,-120.66) 01/25/2021   07:48:05  ( -69.98,-120.63)    1.71                 7
 01/25/2021   08:37:32   (  69.50,  46.31) 01/25/2021   08:38:42  (  69.51,  47.38)   41.68                70
 01/27/2021   23:14:55   (  70.07,-172.31) 01/27/2021   23:14:17  (  70.08,-172.32)    1.51                38
 01/28/2021   00:04:25   ( -69.96,  -4.82) 01/28/2021   00:04:59  ( -69.97,  -4.84)    1.58                34
 01/30/2021   14:41:47   ( -70.63, 136.75) 01/30/2021   14:40:37  ( -70.64, 135.25)   55.27                70
 01/30/2021   15:31:23   (  70.02, -56.48) 01/30/2021   15:31:11  (  70.02, -56.46)    0.77                12
 01/30/2021   16:20:53   ( -69.92, 111.00) 01/30/2021   16:21:53  ( -69.91, 111.02)    0.94                60