Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 10.  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)
 06/10/2021   06:58:13   ( -70.11,-108.14) 06/10/2021   06:57:29  ( -70.10,-108.16)    0.94                44
 06/10/2021   07:47:40   (  70.01,  59.37) 06/10/2021   07:48:13  (  69.99,  59.32)    2.89                33
 06/12/2021   22:25:04   (  70.72,-158.99) 06/12/2021   22:23:55  (  70.78,-160.79)   66.57                69
 06/12/2021   23:14:44   ( -70.06,   7.67) 06/12/2021   23:14:25  ( -70.05,   7.68)    0.42                19
 06/13/2021   00:04:11   (  69.96, 175.18) 06/13/2021   00:05:09  (  69.94, 175.16)    1.63                58
 06/15/2021   14:41:44   (  70.11, -44.00) 06/15/2021   14:40:38  (  70.11, -43.95)    2.11                66
 06/15/2021   15:31:14   ( -70.00, 123.48) 06/15/2021   15:31:20  ( -70.01, 123.52)    1.78                 6
 06/15/2021   16:20:47   (  69.57, -69.48) 06/15/2021   16:21:57  (  69.53, -68.46)   39.98                70
 06/18/2021   06:58:14   (  70.11,  71.87) 06/18/2021   06:57:35  (  70.11,  71.81)    2.66                39
 06/18/2021   07:47:44   ( -70.00,-120.65) 06/18/2021   07:48:17  ( -70.01,-120.72)    3.13                33
 06/20/2021   22:25:08   ( -70.69,  20.97) 06/20/2021   22:23:58  ( -70.75,  19.25)   63.50                70
 06/20/2021   23:14:45   (  70.04,-172.34) 06/20/2021   23:14:30  (  70.02,-172.28)    3.24                15
 06/21/2021   00:04:15   ( -69.93,  -4.86) 06/21/2021   00:05:12  ( -69.91,  -4.81)    2.97                57
 06/23/2021   14:41:48   ( -70.13, 136.03) 06/23/2021   14:40:43  ( -70.13, 136.00)    1.11                65
 06/23/2021   15:31:15   (  70.02, -56.48) 06/23/2021   15:31:27  (  70.03, -56.53)    2.08                12
 06/23/2021   16:20:52   ( -69.54, 110.48) 06/23/2021   16:22:02  ( -69.55, 111.49)   39.50                70