Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2023 4 21.  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   ( -71.04, -69.76) 04/21/2023   04:28:10  ( -71.14, -71.62)   68.19                69
 04/21/2023   05:18:56   (  70.40,  96.91) 04/21/2023   05:18:42  (  70.40,  96.91)    0.44                14
 04/21/2023   06:08:26   ( -70.29, -95.62) 04/21/2023   06:09:23  ( -70.26, -95.57)    3.31                57
 04/23/2023   20:45:59   ( -70.50,  45.28) 04/23/2023   20:44:50  ( -70.50,  45.21)    2.66                69
 04/23/2023   21:35:26   (  70.39,-147.23) 04/23/2023   21:35:34  (  70.39,-147.30)    3.00                 8
 04/23/2023   22:24:59   ( -70.07,  19.94) 04/23/2023   22:26:11  ( -70.09,  20.48)   20.65                72
 04/26/2023   13:02:29   ( -70.44, 161.06) 04/26/2023   13:01:40  ( -70.44, 161.08)    0.53                49
 04/26/2023   13:51:56   (  70.33, -31.45) 04/26/2023   13:52:24  (  70.33, -31.44)    0.25                28
 04/29/2023   05:18:59   ( -70.44, -83.08) 04/29/2023   05:18:32  ( -70.45, -83.15)    3.21                27
 04/29/2023   06:08:27   (  70.27,  84.33) 04/29/2023   06:09:15  (  70.29,  84.40)    3.43                48
 05/01/2023   20:45:57   (  70.64,-134.54) 05/01/2023   20:44:45  (  70.72,-135.13)   23.60                72
 05/01/2023   21:35:30   ( -70.38,  32.70) 05/01/2023   21:35:22  ( -70.36,  32.76)    2.94                 8
 05/01/2023   22:24:57   (  70.26,-159.82) 05/01/2023   22:26:06  (  70.26,-159.77)    1.84                69
 05/04/2023   13:02:30   (  70.47, -18.93) 05/04/2023   13:01:32  (  70.49, -18.98)    3.02                58
 05/04/2023   13:52:00   ( -70.37, 148.56) 05/04/2023   13:52:14  ( -70.38, 148.50)    2.92                14
 05/04/2023   14:41:37   (  69.65, -44.81) 05/04/2023   14:42:45  (  69.65, -43.08)   66.89                68