Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 1 2.  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)
 01/03/2021   23:15:10   ( -70.07,   7.67) 01/03/2021   23:14:15  ( -70.09,   7.69)    2.46                55
 01/04/2021   00:04:37   (  69.97, 175.16) 01/04/2021   00:04:59  (  69.98, 175.17)    1.30                22
 01/04/2021   00:54:20   ( -69.14, -18.32) 01/04/2021   00:55:27  ( -69.15, -16.30)   79.78                67
 01/06/2021   15:31:38   ( -70.07, 123.55) 01/06/2021   15:31:10  ( -70.06, 123.51)    2.26                28
 01/06/2021   16:21:05   (  69.96, -68.96) 01/06/2021   16:21:54  (  69.95, -69.01)    2.90                49
 01/09/2021   06:58:35   (  70.17,  71.94) 01/09/2021   06:57:23  (  70.18,  71.78)    6.34                72
 01/09/2021   07:48:06   ( -70.01,-120.65) 01/09/2021   07:48:04  ( -70.02,-120.67)    1.65                 2
 01/09/2021   08:37:34   (  69.84,  46.76) 01/09/2021   08:38:46  (  69.81,  46.95)    8.34                72
 01/11/2021   23:15:04   (  70.10,-172.27) 01/11/2021   23:14:17  (  70.10,-172.33)    2.42                47
 01/12/2021   00:04:34   ( -70.00,  -4.79) 01/12/2021   00:04:59  ( -69.99,  -4.86)    2.84                25
 01/14/2021   14:41:51   ( -70.96, 137.24) 01/14/2021   14:40:44  ( -71.01, 134.66)   93.72                67
 01/14/2021   15:31:33   (  70.03, -56.50) 01/14/2021   15:31:11  (  70.02, -56.45)    1.95                22
 01/14/2021   16:21:03   ( -69.93, 110.99) 01/14/2021   16:21:53  ( -69.91, 111.03)    1.98                50