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   ( -70.56, -95.12) 10/08/2021   06:08:03  ( -70.63, -96.47)   50.39                70
 10/08/2021   06:58:48   (  70.03,  71.75) 10/08/2021   06:58:38  (  70.05,  71.76)    2.48                10
 10/08/2021   07:48:17   ( -69.97,-120.71) 10/08/2021   07:49:20  ( -69.96,-120.78)    2.93                63
 10/10/2021   22:25:51   ( -70.12,  20.10) 10/10/2021   22:24:49  ( -70.12,  20.11)    0.99                62
 10/10/2021   23:15:18   (  70.02,-172.39) 10/10/2021   23:15:33  (  70.02,-172.41)    0.78                15
 10/11/2021   00:04:56   ( -69.46,  -5.52) 10/11/2021   00:06:06  ( -69.44,  -4.25)   49.86                70
 10/13/2021   14:42:21   ( -70.10, 135.96) 10/13/2021   14:41:44  ( -70.09, 135.94)    1.43                37
 10/13/2021   15:31:48   (  70.00, -56.54) 10/13/2021   15:32:28  (  69.98, -56.59)    2.42                40
 10/16/2021   06:09:15   (  70.51,  84.81) 10/16/2021   06:08:05  (  70.58,  83.62)   44.37                70
 10/16/2021   06:58:51   ( -70.08,-108.20) 10/16/2021   06:58:39  ( -70.05,-108.23)    2.76                12
 10/16/2021   07:48:18   (  69.97,  59.30) 10/16/2021   07:49:23  (  69.95,  59.23)    3.31                65
 10/18/2021   22:25:50   (  70.15,-159.84) 10/18/2021   22:24:51  (  70.13,-159.89)    3.09                59
 10/18/2021   23:15:20   ( -70.05,   7.64) 10/18/2021   23:15:33  ( -70.02,   7.58)    3.11                13
 10/19/2021   00:04:58   (  69.33, 174.30) 10/19/2021   00:06:06  (  69.34, 175.90)   62.72                68
 10/21/2021   14:42:20   (  70.11, -44.02) 10/21/2021   14:41:46  (  70.11, -44.08)    2.54                34
 10/21/2021   15:31:50   ( -70.01, 123.47) 10/21/2021   15:32:28  ( -70.00, 123.40)    2.87                38