Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 9 6.  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   06:09:04   ( -70.63, -95.00) 09/06/2021   06:07:54  ( -70.66, -96.51)   55.68                70
 09/06/2021   06:58:40   (  70.04,  71.78) 09/06/2021   06:58:28  (  70.02,  71.82)    2.61                12
 09/06/2021   07:48:10   ( -69.92,-120.74) 09/06/2021   07:49:10  ( -69.93,-120.73)    0.76                60
 09/08/2021   22:25:42   ( -70.13,  20.14) 09/08/2021   22:24:39  ( -70.11,  20.13)    1.54                63
 09/08/2021   23:15:09   (  70.02,-172.36) 09/08/2021   23:15:23  (  70.00,-172.39)    2.94                14
 09/09/2021   00:04:47   ( -69.47,  -5.48) 09/09/2021   00:05:57  ( -69.48,  -4.31)   45.73                70
 09/11/2021   14:42:12   ( -70.11, 136.00) 09/11/2021   14:41:35  ( -70.09, 135.93)    3.44                37
 09/11/2021   15:31:40   (  69.95, -56.58) 09/11/2021   15:32:18  (  69.93, -56.51)    3.41                38
 09/14/2021   06:09:07   (  70.47,  84.77) 09/14/2021   06:07:56  (  70.55,  83.67)   41.64                71
 09/14/2021   06:58:43   ( -70.04,-108.22) 09/14/2021   06:58:30  ( -70.02,-108.20)    1.77                13
 09/14/2021   07:48:10   (  69.93,  59.27) 09/14/2021   07:49:14  (  69.92,  59.28)    1.23                64
 09/16/2021   22:25:43   (  70.11,-159.87) 09/16/2021   22:24:44  (  70.11,-159.88)    0.46                59
 09/16/2021   23:15:13   ( -70.01,   7.62) 09/16/2021   23:15:26  ( -70.01,   7.60)    0.95                13
 09/17/2021   00:04:51   (  69.29, 174.28) 09/17/2021   00:05:59  (  69.32, 175.92)   64.32                68
 09/19/2021   14:42:12   (  70.08, -44.03) 09/19/2021   14:41:39  (  70.10, -44.09)    3.28                33
 09/19/2021   15:31:42   ( -69.98, 123.46) 09/19/2021   15:32:21  ( -70.00, 123.39)    3.14                39