Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 4 2.  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)
 04/04/2021   14:41:34   ( -70.50, 136.47) 04/04/2021   14:40:23  ( -70.57, 135.39)   40.75                71
 04/04/2021   15:31:07   (  70.06, -56.51) 04/04/2021   15:31:00  (  70.08, -56.53)    1.38                 7
 04/04/2021   16:20:37   ( -69.95, 110.97) 04/04/2021   16:21:41  ( -69.95, 110.99)    1.29                64
 04/07/2021   06:58:09   ( -70.13,-108.19) 04/07/2021   06:57:09  ( -70.14,-108.16)    2.10                60
 04/07/2021   07:47:36   (  70.02,  59.30) 04/07/2021   07:47:53  (  70.02,  59.34)    1.48                17
 04/07/2021   08:37:16   ( -69.36,-133.96) 04/07/2021   08:38:24  ( -69.36,-132.37)   62.44                68
 04/09/2021   23:14:37   ( -70.13,   7.70) 04/09/2021   23:14:03  ( -70.14,   7.62)    2.85                34
 04/10/2021   00:04:04   (  70.02, 175.18) 04/10/2021   00:04:47  (  70.02, 175.11)    2.55                43
 04/12/2021   14:41:31   (  70.46, -43.59) 04/12/2021   14:40:20  (  70.49, -44.47)   32.81                71
 04/12/2021   15:31:05   ( -70.08, 123.50) 04/12/2021   15:30:55  ( -70.09, 123.48)    0.92                10
 04/12/2021   16:20:32   (  69.96, -69.02) 04/12/2021   16:21:39  (  69.97, -69.04)    0.90                67
 04/15/2021   06:58:04   (  70.12,  71.80) 04/15/2021   06:57:06  (  70.13,  71.87)    3.05                58
 04/15/2021   07:47:34   ( -70.02,-120.71) 04/15/2021   07:47:48  ( -70.04,-120.67)    2.20                14
 04/15/2021   08:37:12   (  69.29,  45.95) 04/15/2021   08:38:20  (  69.29,  47.74)   70.54                68