Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 24.  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)
 05/25/2021   06:58:06   ( -70.10,-108.15) 05/25/2021   06:57:18  ( -70.10,-108.11)    1.30                48
 05/25/2021   07:47:33   (  70.00,  59.36) 05/25/2021   07:48:02  (  69.98,  59.37)    1.64                29
 05/27/2021   22:24:55   (  70.84,-158.80) 05/27/2021   22:23:47  (  70.92,-160.99)   80.04                68
 05/27/2021   23:14:37   ( -70.07,   7.69) 05/27/2021   23:14:15  ( -70.08,   7.67)    1.81                22
 05/28/2021   00:04:04   (  69.97, 175.19) 05/28/2021   00:04:59  (  69.97, 175.14)    2.06                55
 05/30/2021   14:41:37   (  70.15, -43.95) 05/30/2021   14:40:28  (  70.13, -43.95)    2.58                69
 05/30/2021   15:31:07   ( -70.04, 123.53) 05/30/2021   15:31:10  ( -70.02, 123.53)    2.01                 3
 05/30/2021   16:20:38   (  69.71, -69.28) 05/30/2021   16:21:50  (  69.70, -68.69)   22.91                72
 06/02/2021   06:58:08   (  70.11,  71.87) 06/02/2021   06:57:25  (  70.12,  71.82)    2.28                43
 06/02/2021   07:47:38   ( -70.00,-120.64) 06/02/2021   07:48:07  ( -70.02,-120.70)    2.44                29
 06/04/2021   22:24:59   ( -70.89,  21.26) 06/04/2021   22:23:51  ( -70.90,  19.04)   81.12                68
 06/04/2021   23:14:39   (  70.07,-172.31) 06/04/2021   23:14:21  (  70.07,-172.33)    0.71                18
 06/05/2021   00:04:09   ( -69.96,  -4.82) 06/05/2021   00:05:03  ( -69.96,  -4.84)    1.20                54