Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 8 21.  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)
 08/21/2019   14:42:05   ( -70.11, 136.02) 08/21/2019   14:41:13  ( -70.09, 136.03)    2.20                52
 08/21/2019   15:31:32   (  70.01, -56.48) 08/21/2019   15:31:57  (  69.98, -56.48)    3.62                25
 08/21/2019   16:21:17   ( -69.07, 109.89) 08/21/2019   16:22:23  ( -69.04, 112.19)   91.75                66
 08/24/2019   06:58:36   ( -70.05,-108.19) 08/24/2019   06:58:08  ( -70.07,-108.16)    2.72                28
 08/24/2019   07:48:03   (  69.94,  59.30) 08/24/2019   07:48:52  (  69.96,  59.32)    1.97                49
 08/26/2019   22:25:35   (  70.19,-159.74) 08/26/2019   22:24:22  (  70.20,-159.90)    6.07                73
 08/26/2019   23:15:06   ( -70.04,   7.67) 08/26/2019   23:15:03  ( -70.05,   7.65)    1.44                 3
 08/27/2019   00:04:33   (  69.92, 175.16) 08/27/2019   00:05:46  (  69.89, 175.20)    4.64                73
 08/29/2019   14:42:06   (  70.12, -43.96) 08/29/2019   14:41:16  (  70.13, -44.02)    2.29                50
 08/29/2019   15:31:36   ( -70.02, 123.53) 08/29/2019   15:31:58  ( -70.03, 123.45)    2.82                22
 08/29/2019   16:21:19   (  69.02, -70.18) 08/29/2019   16:22:25  (  69.02, -67.78)   95.56                66
 09/01/2019   06:58:36   (  70.04,  71.81) 09/01/2019   06:58:09  (  70.06,  71.86)    2.81                27
 09/01/2019   07:48:06   ( -69.94,-120.70) 09/01/2019   07:48:51  ( -69.96,-120.66)    1.71                45
 09/03/2019   22:25:36   ( -70.30,  20.41) 09/03/2019   22:24:24  ( -70.35,  19.87)   21.37                72
 09/03/2019   23:15:06   (  70.02,-172.35) 09/03/2019   23:15:04  (  70.05,-172.35)    3.41                 2
 09/04/2019   00:04:36   ( -69.92,  -4.85) 09/04/2019   00:05:46  ( -69.94,  -4.87)    2.02                70