Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 9 4.  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)
 09/06/2021   06:09:03   ( -70.64, -94.98) 09/06/2021   06:07:53  ( -70.65, -96.49)   55.55                70
 09/06/2021   06:58:39   (  70.05,  71.79) 09/06/2021   06:58:28  (  70.06,  71.75)    2.42                11
 09/06/2021   07:48:09   ( -69.93,-120.73) 09/06/2021   07:49:09  ( -69.92,-120.72)    1.62                60
 09/08/2021   22:25:43   ( -70.08,  20.08) 09/08/2021   22:24:39  ( -70.11,  20.14)    3.41                64
 09/08/2021   23:15:10   (  69.98,-172.42) 09/08/2021   23:15:23  (  69.99,-172.37)    2.40                13
 09/09/2021   00:04:47   ( -69.48,  -5.47) 09/09/2021   00:05:57  ( -69.48,  -4.30)   45.72                70
 09/11/2021   14:42:13   ( -70.07, 135.94) 09/11/2021   14:41:35  ( -70.09, 135.94)    2.07                38
 09/11/2021   15:31:40   (  69.96, -56.57) 09/11/2021   15:32:19  (  69.98, -56.58)    1.94                39
 09/14/2021   06:09:07   (  70.48,  84.79) 09/14/2021   06:07:56  (  70.54,  83.68)   41.47                71
 09/14/2021   06:58:43   ( -70.05,-108.21) 09/14/2021   06:58:31  ( -70.07,-108.26)    3.23                12
 09/14/2021   07:48:10   (  69.94,  59.28) 09/14/2021   07:49:14  (  69.91,  59.29)    2.89                64
 09/16/2021   22:25:42   (  70.12,-159.85) 09/16/2021   22:24:43  (  70.11,-159.87)    1.92                59
 09/16/2021   23:15:12   ( -70.02,   7.64) 09/16/2021   23:15:25  ( -70.00,   7.61)    2.44                13
 09/17/2021   00:04:50   (  69.30, 174.30) 09/17/2021   00:05:58  (  69.32, 175.92)   64.02                68