Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 8 26.  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)
 08/26/2021   14:42:08   ( -70.06, 135.93) 08/26/2021   14:41:27  ( -70.07, 135.98)    2.43                41
 08/26/2021   15:31:35   (  69.95, -56.57) 08/26/2021   15:32:11  (  69.94, -56.52)    2.17                36
 08/29/2021   06:09:00   (  70.58,  84.94) 08/29/2021   06:07:50  (  70.60,  83.60)   49.66                70
 08/29/2021   06:58:38   ( -70.03,-108.22) 08/29/2021   06:58:23  ( -70.04,-108.20)    0.88                15
 08/29/2021   07:48:05   (  69.93,  59.27) 08/29/2021   07:49:07  (  69.92,  59.29)    1.22                62
 08/31/2021   22:25:38   (  70.11,-159.87) 08/31/2021   22:24:37  (  70.10,-159.85)    1.26                61
 08/31/2021   23:15:08   ( -70.00,   7.62) 08/31/2021   23:15:19  ( -70.01,   7.61)    0.54                11
 09/01/2021   00:04:44   (  69.40, 174.43) 09/01/2021   00:05:53  (  69.36, 175.87)   56.51                69
 09/03/2021   14:42:08   (  70.07, -44.04) 09/03/2021   14:41:33  (  70.08, -44.05)    0.68                35
 09/03/2021   15:31:38   ( -69.97, 123.45) 09/03/2021   15:32:15  ( -69.98, 123.42)    1.87                37
 09/06/2021   06:09:03   ( -70.53, -95.14) 09/06/2021   06:07:52  ( -70.59, -96.38)   46.66                71
 09/06/2021   06:58:37   (  70.03,  71.79) 09/06/2021   06:58:27  (  70.01,  71.83)    3.31                10
 09/06/2021   07:48:07   ( -69.93,-120.72) 09/06/2021   07:49:09  ( -69.91,-120.70)    2.94                62
 09/08/2021   22:25:40   ( -70.10,  20.12) 09/08/2021   22:24:39  ( -70.09,  20.16)    1.67                61
 09/08/2021   23:15:07   (  69.99,-172.40) 09/08/2021   23:15:23  (  69.99,-172.37)    0.94                16
 09/09/2021   00:04:46   ( -69.39,  -5.57) 09/09/2021   00:05:55  ( -69.36,  -4.13)   56.83                69