Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 13.  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)
 10/13/2021   14:42:21   ( -70.07, 135.92) 10/13/2021   14:41:44  ( -70.11, 135.91)    3.48                37
 10/13/2021   15:31:48   (  69.98, -56.57) 10/13/2021   15:32:28  (  69.99, -56.61)    2.27                40
 10/16/2021   06:09:15   (  70.50,  84.78) 10/16/2021   06:08:04  (  70.54,  83.69)   40.66                71
 10/16/2021   06:58:51   ( -70.05,-108.24) 10/16/2021   06:58:39  ( -70.07,-108.26)    2.71                12
 10/16/2021   07:48:18   (  69.95,  59.27) 10/16/2021   07:49:23  (  69.96,  59.21)    2.64                65
 10/18/2021   22:25:51   (  70.13,-159.88) 10/18/2021   22:24:52  (  70.14,-159.92)    2.06                59
 10/18/2021   23:15:21   ( -70.02,   7.60) 10/18/2021   23:15:34  ( -70.04,   7.56)    3.22                13
 10/19/2021   00:04:58   (  69.36, 174.35) 10/19/2021   00:06:07  (  69.35, 175.88)   60.27                69
 10/21/2021   14:42:21   (  70.09, -44.06) 10/21/2021   14:41:46  (  70.07, -44.02)    2.60                35
 10/21/2021   15:31:51   ( -69.98, 123.42) 10/21/2021   15:32:28  ( -69.96, 123.45)    1.84                37
 10/24/2021   06:09:15   ( -70.58, -95.10) 10/24/2021   06:08:05  ( -70.62, -96.43)   49.44                70
 10/24/2021   06:58:50   (  70.04,  71.75) 10/24/2021   06:58:40  (  70.05,  71.78)    1.51                10
 10/24/2021   07:48:20   ( -69.93,-120.76) 10/24/2021   07:49:22  ( -69.94,-120.74)    1.40                62
 10/26/2021   22:25:52   ( -70.15,  20.15) 10/26/2021   22:24:51  ( -70.13,  20.12)    2.18                61
 10/26/2021   23:15:19   (  70.04,-172.37) 10/26/2021   23:15:35  (  70.03,-172.42)    2.03                16
 10/27/2021   00:04:58   ( -69.44,  -5.56) 10/27/2021   00:06:08  ( -69.45,  -4.24)   51.35                70