Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 1 1.  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)
 01/01/2021   06:58:37   ( -70.33,-107.84) 01/01/2021   06:57:25  ( -70.40,-108.56)   28.09                72
 01/01/2021   07:48:08   (  70.01,  59.34) 01/01/2021   07:48:04  (  70.02,  59.34)    1.73                 4
 01/01/2021   08:37:38   ( -69.89,-133.18) 01/01/2021   08:38:45  ( -69.88,-133.13)    2.37                67
 01/03/2021   23:15:09   ( -70.12,   7.73) 01/03/2021   23:14:15  ( -70.10,   7.67)    2.74                54
 01/04/2021   00:04:36   (  70.01, 175.23) 01/04/2021   00:04:59  (  69.99, 175.15)    3.66                23
 01/04/2021   00:54:20   ( -69.13, -18.33) 01/04/2021   00:55:27  ( -69.16, -16.32)   79.77                67
 01/06/2021   15:31:38   ( -70.06, 123.54) 01/06/2021   15:31:10  ( -70.07, 123.49)    1.72                28
 01/06/2021   16:21:05   (  69.95, -68.97) 01/06/2021   16:21:54  (  69.96, -69.03)    2.33                49
 01/09/2021   06:58:36   (  70.16,  71.93) 01/09/2021   06:57:24  (  70.19,  71.76)    7.01                72
 01/09/2021   07:48:07   ( -70.00,-120.67) 01/09/2021   07:48:04  ( -69.98,-120.61)    3.19                 3
 01/09/2021   08:37:34   (  69.83,  46.75) 01/09/2021   08:38:46  (  69.82,  46.94)    7.54                72
 01/11/2021   23:15:04   (  70.09,-172.29) 01/11/2021   23:14:17  (  70.11,-172.35)    2.90                47
 01/12/2021   00:04:34   ( -69.99,  -4.80) 01/12/2021   00:04:59  ( -70.00,  -4.87)    3.15                25
 01/14/2021   14:41:51   ( -70.95, 137.23) 01/14/2021   14:40:44  ( -71.02, 134.65)   93.88                67
 01/14/2021   15:31:33   (  70.02, -56.51) 01/14/2021   15:31:11  (  70.03, -56.46)    2.13                22
 01/14/2021   16:21:03   ( -69.92, 110.98) 01/14/2021   16:21:53  ( -69.92, 111.02)    1.37                50