Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 30.  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)
 05/30/2021   14:41:37   (  70.15, -43.95) 05/30/2021   14:40:28  (  70.12, -43.94)    3.03                69
 05/30/2021   15:31:07   ( -70.04, 123.52) 05/30/2021   15:31:10  ( -70.03, 123.52)    0.80                 3
 05/30/2021   16:20:39   (  69.66, -69.35) 05/30/2021   16:21:50  (  69.70, -68.69)   26.15                71
 06/02/2021   06:58:08   (  70.11,  71.88) 06/02/2021   06:57:25  (  70.12,  71.83)    2.22                43
 06/02/2021   07:47:38   ( -70.00,-120.64) 06/02/2021   07:48:07  ( -70.02,-120.71)    3.24                29
 06/04/2021   22:24:59   ( -70.88,  21.26) 06/04/2021   22:23:51  ( -70.91,  19.02)   81.54                68
 06/04/2021   23:14:39   (  70.07,-172.30) 06/04/2021   23:14:21  (  70.07,-172.33)    1.25                18
 06/05/2021   00:04:09   ( -69.96,  -4.82) 06/05/2021   00:05:03  ( -69.97,  -4.85)    1.39                54
 06/07/2021   14:41:43   ( -70.13, 136.02) 06/07/2021   14:40:33  ( -70.12, 136.05)    1.96                70
 06/07/2021   15:31:10   (  70.03, -56.48) 06/07/2021   15:31:17  (  70.02, -56.48)    1.25                 7
 06/07/2021   16:20:44   ( -69.70, 110.70) 06/07/2021   16:21:55  ( -69.70, 111.31)   23.58                71
 06/10/2021   06:58:13   ( -70.09,-108.16) 06/10/2021   06:57:28  ( -70.07,-108.10)    3.12                45
 06/10/2021   07:47:40   (  69.98,  59.33) 06/10/2021   07:48:12  (  69.97,  59.36)    1.66                32
 06/12/2021   22:25:03   (  70.74,-158.95) 06/12/2021   22:23:54  (  70.76,-160.75)   65.95                69
 06/12/2021   23:14:43   ( -70.09,   7.72) 06/12/2021   23:14:25  ( -70.07,   7.66)    3.14                18
 06/13/2021   00:04:11   (  69.92, 175.13) 06/13/2021   00:05:08  (  69.92, 175.20)    2.52                57