Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 26.  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)
 05/27/2021   22:24:54   (  70.87,-158.75) 05/27/2021   22:23:47  (  70.94,-161.02)   82.83                67
 05/27/2021   23:14:37   ( -70.05,   7.66) 05/27/2021   23:14:14  ( -70.05,   7.72)    2.08                23
 05/28/2021   00:04:04   (  69.95, 175.17) 05/28/2021   00:04:58  (  69.94, 175.20)    1.40                54
 05/30/2021   14:41:38   (  70.13, -43.98) 05/30/2021   14:40:29  (  70.14, -43.97)    1.52                69
 05/30/2021   15:31:08   ( -70.02, 123.50) 05/30/2021   15:31:11  ( -70.04, 123.50)    2.61                 3
 05/30/2021   16:20:39   (  69.70, -69.31) 05/30/2021   16:21:50  (  69.67, -68.64)   26.05                71
 06/02/2021   06:58:08   (  70.09,  71.85) 06/02/2021   06:57:24  (  70.09,  71.88)    1.32                44
 06/02/2021   07:47:38   ( -69.99,-120.67) 06/02/2021   07:48:06  ( -69.98,-120.65)    0.88                28
 06/04/2021   22:24:59   ( -70.87,  21.24) 06/04/2021   22:23:51  ( -70.92,  19.00)   81.44                68
 06/04/2021   23:14:39   (  70.05,-172.33) 06/04/2021   23:14:20  (  70.03,-172.27)    3.18                19
 06/05/2021   00:04:09   ( -69.95,  -4.84) 06/05/2021   00:05:02  ( -69.92,  -4.79)    3.15                53
 06/07/2021   14:41:43   ( -70.12, 136.00) 06/07/2021   14:40:33  ( -70.13, 136.04)    1.97                70
 06/07/2021   15:31:10   (  70.00, -56.51) 06/07/2021   15:31:17  (  70.03, -56.50)    2.78                 7
 06/07/2021   16:20:43   ( -69.74, 110.75) 06/07/2021   16:21:55  ( -69.71, 111.29)   21.29                72