Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 25.  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)
 12/26/2020   23:15:11   (  70.09,-172.31) 12/26/2020   23:14:15  (  70.11,-172.32)    2.11                56
 12/27/2020   00:04:41   ( -69.98,  -4.83) 12/27/2020   00:04:56  ( -69.96,  -4.79)    2.05                15
 12/27/2020   00:54:20   (  69.21, 161.77) 12/27/2020   00:55:28  (  69.21, 163.62)   73.04                68
 12/29/2020   15:31:40   (  70.05, -56.48) 12/29/2020   15:31:10  (  70.07, -56.50)    2.44                30
 12/29/2020   16:21:10   ( -69.94, 111.00) 12/29/2020   16:21:51  ( -69.92, 111.04)    2.40                41
 01/01/2021   06:58:37   ( -70.33,-107.84) 01/01/2021   06:57:25  ( -70.41,-108.56)   28.26                72
 01/01/2021   07:48:08   (  70.00,  59.33) 01/01/2021   07:48:03  (  69.98,  59.40)    3.53                 5
 01/01/2021   08:37:38   ( -69.90,-133.18) 01/01/2021   08:38:45  ( -69.88,-133.13)    2.20                67
 01/03/2021   23:15:09   ( -70.12,   7.74) 01/03/2021   23:14:15  ( -70.11,   7.67)    2.83                54
 01/04/2021   00:04:37   (  69.95, 175.14) 01/04/2021   00:04:58  (  69.95, 175.22)    2.96                21
 01/04/2021   00:54:20   ( -69.13, -18.33) 01/04/2021   00:55:27  ( -69.16, -16.32)   79.53                67
 01/06/2021   15:31:38   ( -70.06, 123.54) 01/06/2021   15:31:10  ( -70.07, 123.49)    2.27                28
 01/06/2021   16:21:05   (  69.95, -68.98) 01/06/2021   16:21:53  (  69.92, -68.97)    3.20                48