Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 5 16.  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)
 05/16/2020   22:24:51   ( -70.19,  20.21) 05/16/2020   22:23:38  ( -70.25,  20.09)    7.23                73
 05/16/2020   23:14:18   (  70.09,-172.30) 05/16/2020   23:14:21  (  70.08,-172.35)    1.72                 3
 05/17/2020   00:03:49   ( -69.93,  -4.89) 05/17/2020   00:05:02  ( -69.94,  -4.81)    3.40                73
 05/19/2020   14:41:23   ( -70.15, 136.02) 05/19/2020   14:40:31  ( -70.15, 136.01)    0.27                52
 05/19/2020   15:30:50   (  70.04, -56.49) 05/19/2020   15:31:15  (  70.04, -56.51)    0.65                25
 05/19/2020   16:20:35   ( -69.12, 109.88) 05/19/2020   16:21:41  ( -69.10, 112.18)   90.97                66
 05/22/2020   06:57:56   ( -70.09,-108.20) 05/22/2020   06:57:25  ( -70.11,-108.15)    2.60                31
 05/22/2020   07:47:23   (  69.98,  59.29) 05/22/2020   07:48:09  (  70.00,  59.32)    2.92                46
 05/24/2020   22:24:54   (  70.44,-159.46) 05/24/2020   22:23:43  (  70.49,-160.29)   31.14                71
 05/24/2020   23:14:29   ( -70.07,   7.64) 05/24/2020   23:14:19  ( -70.07,   7.68)    1.79                10
 05/25/2020   00:03:56   (  69.96, 175.12) 05/25/2020   00:05:03  (  69.97, 175.15)    1.68                67
 05/27/2020   14:41:31   (  70.18, -43.98) 05/27/2020   14:40:31  (  70.19, -44.04)    2.70                60
 05/27/2020   15:31:02   ( -70.03, 123.44) 05/27/2020   15:31:12  ( -70.03, 123.52)    2.74                10
 05/27/2020   16:20:38   (  69.42, -69.75) 05/27/2020   16:21:47  (  69.45, -68.32)   56.16                69
 05/30/2020   06:58:06   (  70.12,  71.80) 05/30/2020   06:57:24  (  70.10,  71.87)    3.16                42
 05/30/2020   07:47:36   ( -70.03,-120.70) 05/30/2020   07:48:07  ( -70.05,-120.74)    2.73                31