Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 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)
 06/07/2021   14:41:42   ( -70.15, 136.05) 06/07/2021   14:40:33  ( -70.16, 135.99)    2.33                69
 06/07/2021   15:31:10   (  70.00, -56.53) 06/07/2021   15:31:16  (  69.99, -56.45)    2.92                 6
 06/07/2021   16:20:43   ( -69.72, 110.72) 06/07/2021   16:21:55  ( -69.74, 111.25)   20.64                72
 06/10/2021   06:58:13   ( -70.10,-108.14) 06/10/2021   06:57:29  ( -70.11,-108.16)    0.95                44
 06/10/2021   07:47:40   (  70.00,  59.36) 06/10/2021   07:48:13  (  70.00,  59.31)    2.04                33
 06/12/2021   22:25:04   (  70.71,-159.00) 06/12/2021   22:23:55  (  70.79,-160.80)   66.77                69
 06/12/2021   23:14:44   ( -70.06,   7.67) 06/12/2021   23:14:25  ( -70.06,   7.68)    0.30                19
 06/13/2021   00:04:11   (  69.95, 175.17) 06/13/2021   00:05:09  (  69.95, 175.15)    0.74                58
 06/15/2021   14:41:45   (  70.11, -44.00) 06/15/2021   14:40:39  (  70.11, -43.96)    1.84                66
 06/15/2021   15:31:15   ( -70.00, 123.48) 06/15/2021   15:31:21  ( -70.01, 123.52)    1.69                 6
 06/15/2021   16:20:48   (  69.56, -69.48) 06/15/2021   16:21:58  (  69.53, -68.47)   39.71                70
 06/18/2021   06:58:14   (  70.10,  71.87) 06/18/2021   06:57:35  (  70.12,  71.80)    3.39                39
 06/18/2021   07:47:44   ( -70.00,-120.64) 06/18/2021   07:48:17  ( -70.01,-120.72)    3.36                33