Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 4 11.  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)
 04/12/2021   14:41:31   (  70.45, -43.61) 04/12/2021   14:40:20  (  70.49, -44.48)   32.79                71
 04/12/2021   15:31:06   ( -70.06, 123.47) 04/12/2021   15:30:55  ( -70.05, 123.54)    3.17                11
 04/12/2021   16:20:33   (  69.96, -69.03) 04/12/2021   16:21:40  (  69.97, -69.04)    1.71                67
 04/15/2021   06:58:04   (  70.17,  71.87) 04/15/2021   06:57:08  (  70.18,  71.79)    2.84                56
 04/15/2021   07:47:34   ( -70.06,-120.65) 04/15/2021   07:47:49  ( -70.04,-120.68)    2.45                15
 04/15/2021   08:37:13   (  69.29,  45.94) 04/15/2021   08:38:21  (  69.28,  47.74)   70.96                68
 04/17/2021   23:14:32   (  70.11,-172.35) 04/17/2021   23:14:00  (  70.13,-172.35)    2.22                32
 04/18/2021   00:04:02   ( -70.00,  -4.86) 04/18/2021   00:04:41  ( -69.99,  -4.82)    2.18                39
 04/20/2021   14:41:27   ( -70.54, 136.51) 04/20/2021   14:40:16  ( -70.56, 135.44)   39.74                71
 04/20/2021   15:31:00   (  70.09, -56.49) 04/20/2021   15:30:53  (  70.08, -56.50)    1.85                 7
 04/20/2021   16:20:30   ( -69.99, 111.00) 04/20/2021   16:21:35  ( -69.99, 110.96)    1.83                65
 04/23/2021   06:58:02   ( -70.14,-108.19) 04/23/2021   06:57:02  ( -70.14,-108.12)    2.51                60
 04/23/2021   07:47:29   (  70.02,  59.29) 04/23/2021   07:47:46  (  70.03,  59.35)    2.65                17