Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2023 4 20.  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)
 04/21/2023   04:29:19   ( -71.05, -69.75) 04/21/2023   04:28:10  ( -71.14, -71.62)   68.31                69
 04/21/2023   05:18:56   (  70.40,  96.92) 04/21/2023   05:18:42  (  70.40,  96.90)    0.65                14
 04/21/2023   06:08:26   ( -70.29, -95.61) 04/21/2023   06:09:24  ( -70.32, -95.65)    3.11                58
 04/23/2023   20:46:00   ( -70.45,  45.22) 04/23/2023   20:44:49  ( -70.45,  45.29)    2.83                71
 04/23/2023   21:35:27   (  70.35,-147.29) 04/23/2023   21:35:33  (  70.34,-147.22)    2.96                 6
 04/23/2023   22:25:00   ( -70.08,  19.95) 04/23/2023   22:26:12  ( -70.09,  20.47)   19.89                72
 04/26/2023   13:02:29   ( -70.46, 161.09) 04/26/2023   13:01:40  ( -70.45, 161.07)    1.43                49
 04/26/2023   13:51:56   (  70.35, -31.42) 04/26/2023   13:52:24  (  70.34, -31.45)    1.67                28
 04/29/2023   05:19:00   ( -70.41, -83.12) 04/29/2023   05:18:31  ( -70.40, -83.09)    1.32                29
 04/29/2023   06:08:27   (  70.30,  84.36) 04/29/2023   06:09:15  (  70.30,  84.39)    1.02                48
 05/01/2023   20:45:57   (  70.67,-134.49) 05/01/2023   20:44:45  (  70.74,-135.16)   25.44                72
 05/01/2023   21:35:31   ( -70.35,  32.67) 05/01/2023   21:35:22  ( -70.37,  32.74)    3.53                 9
 05/01/2023   22:24:57   (  70.29,-159.77) 05/01/2023   22:26:06  (  70.27,-159.79)    2.47                69