Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 7.  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)
 10/08/2021   06:09:13   ( -70.57, -95.12) 10/08/2021   06:08:03  ( -70.63, -96.46)   50.21                70
 10/08/2021   06:58:48   (  70.03,  71.75) 10/08/2021   06:58:38  (  70.05,  71.76)    1.53                10
 10/08/2021   07:48:17   ( -69.97,-120.70) 10/08/2021   07:49:20  ( -69.95,-120.77)    3.50                63
 10/10/2021   22:25:51   ( -70.12,  20.11) 10/10/2021   22:24:49  ( -70.12,  20.12)    0.53                62
 10/10/2021   23:15:18   (  70.02,-172.39) 10/10/2021   23:15:33  (  70.01,-172.41)    1.46                15
 10/11/2021   00:04:57   ( -69.41,  -5.59) 10/11/2021   00:06:06  ( -69.44,  -4.24)   52.79                69
 10/13/2021   14:42:21   ( -70.11, 135.97) 10/13/2021   14:41:44  ( -70.08, 135.95)    2.77                37
 10/13/2021   15:31:48   (  70.00, -56.53) 10/13/2021   15:32:28  (  69.98, -56.58)    3.40                40
 10/16/2021   06:09:15   (  70.52,  84.82) 10/16/2021   06:08:05  (  70.57,  83.63)   44.26                70
 10/16/2021   06:58:52   ( -70.03,-108.26) 10/16/2021   06:58:39  ( -70.05,-108.23)    2.58                13
 10/16/2021   07:48:19   (  69.92,  59.23) 10/16/2021   07:49:23  (  69.95,  59.24)    2.63                64
 10/18/2021   22:25:51   (  70.11,-159.91) 10/18/2021   22:24:51  (  70.12,-159.89)    2.23                60
 10/18/2021   23:15:21   ( -70.00,   7.58) 10/18/2021   23:15:33  ( -70.02,   7.59)    2.07                12
 10/19/2021   00:04:58   (  69.34, 174.32) 10/19/2021   00:06:06  (  69.33, 175.91)   62.56                68