Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 1.  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)
 05/01/2021   06:57:55   (  70.18,  71.86) 05/01/2021   06:57:02  (  70.19,  71.80)    3.02                53
 05/01/2021   07:47:25   ( -70.06,-120.66) 05/01/2021   07:47:43  ( -70.05,-120.67)    0.90                18
 05/01/2021   08:37:06   (  69.19,  45.79) 05/01/2021   08:38:13  (  69.19,  47.91)   83.62                67
 05/03/2021   23:14:22   (  70.14,-172.32) 05/03/2021   23:13:57  (  70.11,-172.31)    2.74                25
 05/04/2021   00:03:52   ( -70.02,  -4.84) 05/04/2021   00:04:39  ( -70.02,  -4.86)    0.71                47
 05/06/2021   14:41:23   ( -70.20, 136.01) 05/06/2021   14:40:10  ( -70.20, 136.01)    0.14                73
 05/06/2021   15:30:50   (  70.09, -56.50) 05/06/2021   15:30:54  (  70.09, -56.51)    0.48                 4
 05/06/2021   16:20:22   ( -69.87, 110.83) 05/06/2021   16:21:34  ( -69.89, 111.11)   11.09                72
 05/09/2021   06:57:51   ( -70.15,-108.18) 05/09/2021   06:57:07  ( -70.17,-108.19)    2.55                44
 05/09/2021   07:47:18   (  70.04,  59.30) 05/09/2021   07:47:51  (  70.06,  59.29)    2.84                33
 05/11/2021   22:24:41   (  70.64,-159.22) 05/11/2021   22:23:31  (  70.72,-160.62)   52.27                70
 05/11/2021   23:14:19   ( -70.09,   7.62) 05/11/2021   23:14:03  ( -70.09,   7.70)    2.84                16
 05/12/2021   00:03:46   (  69.98, 175.10) 05/12/2021   00:04:47  (  69.99, 175.17)    2.62                61
 05/14/2021   14:41:15   (  70.19, -44.00) 05/14/2021   14:40:17  (  70.18, -43.99)    1.18                58
 05/14/2021   15:30:45   ( -70.09, 123.49) 05/14/2021   15:30:59  ( -70.07, 123.49)    1.71                14
 05/14/2021   16:20:23   (  69.36, -69.85) 05/14/2021   16:21:31  (  69.33, -68.11)   68.52                68