Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 5.  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)
 10/05/2021   14:42:18   (  70.10, -44.03) 10/05/2021   14:41:44  (  70.09, -44.07)    1.67                34
 10/05/2021   15:31:48   ( -69.98, 123.43) 10/05/2021   15:32:26  ( -69.99, 123.39)    2.24                38
 10/08/2021   06:09:13   ( -70.57, -95.11) 10/08/2021   06:08:03  ( -70.63, -96.46)   50.09                70
 10/08/2021   06:58:48   (  70.04,  71.76) 10/08/2021   06:58:38  (  70.05,  71.77)    1.38                10
 10/08/2021   07:48:18   ( -69.92,-120.77) 10/08/2021   07:49:20  ( -69.95,-120.77)    3.22                62
 10/10/2021   22:25:51   ( -70.12,  20.11) 10/10/2021   22:24:49  ( -70.11,  20.13)    1.37                62
 10/10/2021   23:15:18   (  70.02,-172.39) 10/10/2021   23:15:33  (  70.01,-172.40)    1.71                15
 10/11/2021   00:04:57   ( -69.41,  -5.58) 10/11/2021   00:06:06  ( -69.43,  -4.23)   52.93                69
 10/13/2021   14:42:22   ( -70.05, 135.89) 10/13/2021   14:41:44  ( -70.07, 135.96)    3.52                38
 10/13/2021   15:31:49   (  69.95, -56.61) 10/13/2021   15:32:28  (  69.97, -56.57)    2.98                39
 10/16/2021   06:09:16   (  70.46,  84.74) 10/16/2021   06:08:05  (  70.56,  83.65)   41.65                71
 10/16/2021   06:58:52   ( -70.03,-108.26) 10/16/2021   06:58:39  ( -70.03,-108.20)    2.23                13
 10/16/2021   07:48:19   (  69.92,  59.23) 10/16/2021   07:49:23  (  69.93,  59.26)    1.78                64
 10/18/2021   22:25:51   (  70.10,-159.91) 10/18/2021   22:24:51  (  70.11,-159.86)    1.96                60
 10/18/2021   23:15:21   ( -70.00,   7.58) 10/18/2021   23:15:33  ( -70.00,   7.62)    1.80                12
 10/19/2021   00:04:58   (  69.34, 174.31) 10/19/2021   00:06:06  (  69.32, 175.93)   63.65                68