Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 12.  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)
 04/12/2020   06:58:01   (  70.12,  71.79) 04/12/2020   06:57:30  (  70.13,  71.80)    1.23                31
 04/12/2020   07:47:31   ( -70.01,-120.74) 04/12/2020   07:48:11  ( -69.99,-120.68)    2.93                40
 04/14/2020   22:24:57   ( -70.46,  20.52) 04/14/2020   22:23:45  ( -70.49,  19.69)   31.00                72
 04/14/2020   23:14:29   (  70.08,-172.39) 04/14/2020   23:14:23  (  70.06,-172.33)    3.21                 6
 04/15/2020   00:03:59   ( -69.97,  -4.91) 04/15/2020   00:05:05  ( -69.97,  -4.88)    1.14                66
 04/17/2020   14:41:31   ( -70.16, 135.95) 04/17/2020   14:40:34  ( -70.16, 135.98)    0.87                57
 04/17/2020   15:30:58   (  70.05, -56.56) 04/17/2020   15:31:18  (  70.05, -56.54)    0.83                20
 04/17/2020   16:20:40   ( -69.28, 110.03) 04/17/2020   16:21:48  ( -69.32, 111.85)   71.33                68
 04/20/2020   06:58:00   ( -70.14,-108.21) 04/20/2020   06:57:29  ( -70.15,-108.23)    1.72                31
 04/20/2020   07:47:27   (  70.02,  59.27) 04/20/2020   07:48:13  (  70.04,  59.24)    2.61                46
 04/22/2020   22:24:57   (  70.32,-159.70) 04/22/2020   22:23:45  (  70.40,-160.17)   19.56                72
 04/22/2020   23:14:29   ( -70.12,   7.64) 04/22/2020   23:14:23  ( -70.09,   7.63)    3.25                 6
 04/23/2020   00:03:56   (  70.00, 175.12) 04/23/2020   00:05:07  (  69.98, 175.10)    1.65                71
 04/25/2020   14:41:27   (  70.19, -44.01) 04/25/2020   14:40:35  (  70.19, -44.06)    2.31                52
 04/25/2020   15:30:58   ( -70.05, 123.41) 04/25/2020   15:31:16  ( -70.03, 123.49)    3.57                18