Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 29.  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)
 10/29/2021   13:52:45   (  70.59, -30.96) 10/29/2021   13:51:35  (  70.68, -32.39)   53.48                70
 10/29/2021   14:42:23   ( -70.04, 135.86) 10/29/2021   14:42:07  ( -70.06, 135.90)    3.33                16
 10/29/2021   15:31:50   (  69.94, -56.63) 10/29/2021   15:32:51  (  69.94, -56.61)    1.19                61
 11/01/2021   06:09:22   (  70.14,  84.25) 11/01/2021   06:08:24  (  70.15,  84.21)    2.26                58
 11/01/2021   06:58:52   ( -70.03,-108.27) 11/01/2021   06:59:05  ( -70.01,-108.25)    2.37                13
 11/01/2021   07:48:30   (  69.32,  58.40) 11/01/2021   07:49:38  (  69.30,  60.09)   66.36                68
 11/03/2021   22:25:50   (  70.12,-159.90) 11/03/2021   22:25:21  (  70.10,-159.95)    2.72                29
 11/03/2021   23:15:20   ( -70.01,   7.58) 11/03/2021   23:16:03  ( -70.01,   7.51)    2.79                43
 11/06/2021   13:52:51   ( -70.25, 148.53) 11/06/2021   13:51:38  ( -70.33, 148.15)   16.87                73
 11/06/2021   14:42:20   (  70.03, -44.13) 11/06/2021   14:42:19  (  70.06, -44.12)    2.92                 1
 11/06/2021   15:31:50   ( -69.93, 123.35) 11/06/2021   15:33:00  ( -69.91, 123.42)    3.33                70
 11/09/2021   06:09:22   ( -70.11, -95.79) 11/09/2021   06:08:33  ( -70.13, -95.78)    2.50                49
 11/09/2021   06:58:49   (  69.99,  71.69) 11/09/2021   06:59:17  (  70.02,  71.70)    2.63                28
 11/11/2021   21:36:10   (  70.77,-146.57) 11/11/2021   21:35:01  (  70.82,-148.44)   68.86                69
 11/11/2021   22:25:51   ( -70.06,  20.03) 11/11/2021   22:25:31  ( -70.09,  20.04)    3.07                20
 11/11/2021   23:15:17   (  70.00,-172.41) 11/11/2021   23:16:15  (  69.98,-172.48)    3.63                58