Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 8.  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   ( -70.12,-108.12) 06/10/2021   06:57:29  ( -70.09,-108.14)    2.84                44
 06/10/2021   07:47:41   (  69.96,  59.31) 06/10/2021   07:48:13  (  69.98,  59.33)    2.28                32
 06/12/2021   22:25:04   (  70.73,-158.97) 06/12/2021   22:23:55  (  70.77,-160.78)   66.34                69
 06/12/2021   23:14:44   ( -70.07,   7.69) 06/12/2021   23:14:25  ( -70.04,   7.70)    2.97                19
 06/13/2021   00:04:11   (  69.91, 175.11) 06/13/2021   00:05:08  (  69.93, 175.17)    3.37                57
 06/15/2021   14:41:44   (  70.12, -43.98) 06/15/2021   14:40:39  (  70.15, -44.01)    2.84                65
 06/15/2021   15:31:14   ( -70.02, 123.50) 06/15/2021   15:31:20  ( -69.99, 123.54)    3.12                 6
 06/15/2021   16:20:48   (  69.52, -69.54) 06/15/2021   16:21:58  (  69.57, -68.52)   39.94                70
 06/18/2021   06:58:14   (  70.12,  71.89) 06/18/2021   06:57:35  (  70.10,  71.82)    3.14                39
 06/18/2021   07:47:44   ( -70.01,-120.63) 06/18/2021   07:48:17  ( -70.00,-120.70)    3.29                33
 06/20/2021   22:25:08   ( -70.71,  21.00) 06/20/2021   22:23:59  ( -70.79,  19.19)   66.77                69
 06/20/2021   23:14:45   (  70.05,-172.32) 06/20/2021   23:14:31  (  70.06,-172.34)    0.83                14
 06/21/2021   00:04:15   ( -69.95,  -4.83) 06/21/2021   00:05:13  ( -69.95,  -4.86)    1.14                58