Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 16.  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)
 12/16/2021   13:52:41   (  70.52, -31.08) 12/16/2021   13:51:30  (  70.59, -32.12)   39.32                71
 12/16/2021   14:42:17   ( -70.08, 135.91) 12/16/2021   14:42:04  ( -70.10, 135.98)    3.51                13
 12/16/2021   15:31:44   (  69.97, -56.59) 12/16/2021   15:32:48  (  69.97, -56.52)    2.69                64
 12/19/2021   06:09:15   (  70.16,  84.28) 12/19/2021   06:08:13  (  70.17,  84.32)    2.48                62
 12/19/2021   06:58:44   ( -70.10,-108.17) 12/19/2021   06:58:55  ( -70.09,-108.23)    2.72                11
 12/19/2021   07:48:21   (  69.44,  58.57) 12/19/2021   07:49:29  (  69.44,  60.04)   57.43                68
 12/21/2021   22:25:44   (  70.12,-159.89) 12/21/2021   22:25:04  (  70.12,-159.82)    2.82                40
 12/21/2021   23:15:14   ( -70.01,   7.59) 12/21/2021   23:15:46  ( -70.04,   7.62)    3.32                32
 12/24/2021   13:52:33   ( -70.90, 149.50) 12/24/2021   13:51:25  ( -70.93, 147.37)   77.47                68
 12/24/2021   14:42:12   (  70.13, -43.99) 12/24/2021   14:41:56  (  70.13, -44.05)    2.12                16
 12/24/2021   15:31:43   ( -69.97, 123.41) 12/24/2021   15:32:37  ( -69.99, 123.48)    3.26                54
 12/27/2021   06:09:14   ( -70.20, -95.67) 12/27/2021   06:08:03  ( -70.20, -95.68)    0.71                71
 12/27/2021   06:58:41   (  70.08,  71.82) 12/27/2021   06:58:47  (  70.09,  71.80)    1.01                 6
 12/27/2021   07:48:14   ( -69.82,-120.92) 12/27/2021   07:49:26  ( -69.84,-120.51)   15.98                72
 12/29/2021   22:25:42   ( -70.14,  20.14) 12/29/2021   22:24:53  ( -70.16,  20.16)    1.61                49
 12/29/2021   23:15:09   (  70.03,-172.38) 12/29/2021   23:15:37  (  70.05,-172.36)    2.39                28