Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 8 21.  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)
 08/23/2020   14:42:01   ( -70.14, 136.05) 08/23/2020   14:40:54  ( -70.16, 135.99)    3.28                67
 08/23/2020   15:31:28   (  70.03, -56.46) 08/23/2020   15:31:38  (  70.04, -56.53)    2.99                10
 08/23/2020   16:21:03   ( -69.65, 110.65) 08/23/2020   16:22:14  ( -69.64, 111.40)   29.15                71
 08/26/2020   06:58:33   ( -70.10,-108.13) 08/26/2020   06:57:49  ( -70.09,-108.13)    1.14                44
 08/26/2020   07:48:00   (  69.99,  59.35) 08/26/2020   07:48:33  (  69.98,  59.35)    0.98                33
 08/28/2020   22:25:24   (  70.77,-158.91) 08/28/2020   22:24:15  (  70.80,-160.82)   70.02                69
 08/28/2020   23:15:05   ( -70.07,   7.70) 08/28/2020   23:14:45  ( -70.07,   7.66)    1.33                20
 08/29/2020   00:04:32   (  69.95, 175.18) 08/29/2020   00:05:29  (  69.96, 175.14)    2.16                57
 08/31/2020   14:42:06   (  70.14, -43.96) 08/31/2020   14:40:58  (  70.16, -44.02)    3.29                68
 08/31/2020   15:31:37   ( -69.99, 123.46) 08/31/2020   15:31:39  ( -70.00, 123.54)    3.19                 2
 08/31/2020   16:21:08   (  69.65, -69.36) 08/31/2020   16:22:19  (  69.69, -68.68)   26.66                71
 09/03/2020   06:58:38   (  70.12,  71.89) 09/03/2020   06:57:53  (  70.10,  71.84)    3.41                45
 09/03/2020   07:48:09   ( -69.98,-120.68) 09/03/2020   07:48:35  ( -69.99,-120.68)    1.36                26