Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 24.  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)
 12/24/2020   06:58:37   (  70.38,  72.23) 12/24/2020   06:57:25  (  70.43,  71.41)   31.02                72
 12/24/2020   07:48:11   ( -70.04,-120.62) 12/24/2020   07:48:01  ( -70.03,-120.65)    2.31                10
 12/24/2020   08:37:39   (  69.89,  46.81) 12/24/2020   08:38:45  (  69.90,  46.84)    2.57                66
 12/26/2020   23:15:11   (  70.07,-172.34) 12/26/2020   23:14:14  (  70.07,-172.27)    2.63                57
 12/27/2020   00:04:41   ( -69.96,  -4.86) 12/27/2020   00:04:56  ( -69.98,  -4.81)    3.16                15
 12/27/2020   00:54:20   (  69.19, 161.75) 12/27/2020   00:55:27  (  69.17, 163.67)   76.06                67
 12/29/2020   15:31:40   (  70.03, -56.51) 12/29/2020   15:31:09  (  70.03, -56.44)    2.67                31
 12/29/2020   16:21:10   ( -69.92, 110.97) 12/29/2020   16:21:51  ( -69.94, 111.01)    2.79                41
 01/01/2021   06:58:38   ( -70.31,-107.86) 01/01/2021   06:57:25  ( -70.37,-108.51)   25.06                73
 01/01/2021   07:48:09   (  69.98,  59.31) 01/01/2021   07:48:04  (  70.00,  59.37)    3.40                 5
 01/01/2021   08:37:39   ( -69.88,-133.20) 01/01/2021   08:38:46  ( -69.90,-133.16)    3.32                67
 01/03/2021   23:15:09   ( -70.10,   7.71) 01/03/2021   23:14:14  ( -70.08,   7.72)    2.73                55
 01/04/2021   00:04:36   (  69.98, 175.19) 01/04/2021   00:04:58  (  69.97, 175.19)    1.56                22
 01/04/2021   00:54:19   ( -69.17, -18.28) 01/04/2021   00:55:27  ( -69.18, -16.35)   76.22                68
 01/06/2021   15:31:38   ( -70.05, 123.52) 01/06/2021   15:31:09  ( -70.04, 123.53)    0.56                29
 01/06/2021   16:21:05   (  69.93, -69.00) 01/06/2021   16:21:53  (  69.94, -69.01)    1.75                48