Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 3 11.  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)
 03/11/2021   14:41:42   (  70.40, -43.63) 03/11/2021   14:40:30  (  70.46, -44.47)   32.00                72
 03/11/2021   15:31:16   ( -70.07, 123.51) 03/11/2021   15:31:06  ( -70.07, 123.46)    1.94                10
 03/11/2021   16:20:43   (  69.97, -68.98) 03/11/2021   16:21:50  (  69.94, -69.04)    3.38                67
 03/14/2021   06:58:15   (  70.09,  71.80) 03/14/2021   06:57:18  (  70.12,  71.84)    3.08                57
 03/14/2021   07:47:44   ( -70.04,-120.65) 03/14/2021   07:48:00  ( -70.04,-120.72)    2.61                16
 03/14/2021   08:37:24   (  69.21,  45.88) 03/14/2021   08:38:31  (  69.22,  47.78)   75.04                67
 03/16/2021   23:14:42   (  70.11,-172.29) 03/16/2021   23:14:12  (  70.09,-172.34)    2.78                30
 03/17/2021   00:04:13   ( -69.94,  -4.89) 03/17/2021   00:04:53  ( -69.95,  -4.82)    3.06                40
 03/19/2021   14:41:39   ( -70.40, 136.35) 03/19/2021   14:40:27  ( -70.45, 135.57)   29.91                72
 03/19/2021   15:31:10   (  70.07, -56.48) 03/19/2021   15:31:06  (  70.07, -56.53)    2.14                 4
 03/19/2021   16:20:40   ( -69.96, 111.01) 03/19/2021   16:21:47  ( -69.93, 111.00)    3.54                67
 03/22/2021   06:58:10   ( -70.13,-108.15) 03/22/2021   06:57:14  ( -70.11,-108.13)    2.84                56
 03/22/2021   07:47:37   (  70.02,  59.34) 03/22/2021   07:47:58  (  69.99,  59.36)    3.06                21
 03/22/2021   08:37:20   ( -69.20,-134.14) 03/22/2021   08:38:27  ( -69.21,-132.19)   76.86                67
 03/24/2021   23:14:38   ( -70.08,   7.67) 03/24/2021   23:14:08  ( -70.08,   7.68)    0.74                30
 03/25/2021   00:04:05   (  69.96, 175.14) 03/25/2021   00:04:52  (  69.97, 175.17)    1.04                47