Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 12 28.  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)
 12/30/2019   06:58:38   ( -70.15,-108.09) 12/30/2019   06:57:26  ( -70.15,-108.16)    2.59                72
 12/30/2019   07:48:06   (  69.99,  59.32) 12/30/2019   07:48:09  (  69.99,  59.40)    2.90                 3
 12/30/2019   08:37:37   ( -69.83,-133.27) 12/30/2019   08:38:50  ( -69.84,-133.06)    8.01                73
 01/01/2020   23:15:07   ( -70.11,   7.74) 01/01/2020   23:14:18  ( -70.08,   7.72)    3.42                49
 01/02/2020   00:04:34   (  70.00, 175.22) 01/02/2020   00:05:02  (  69.97, 175.20)    3.00                28
 01/04/2020   14:41:51   (  70.94, -42.79) 01/04/2020   14:40:44  (  71.01, -45.30)   91.50                67
 01/04/2020   15:31:35   ( -70.07, 123.56) 01/04/2020   15:31:10  ( -70.07, 123.52)    1.22                25
 01/04/2020   16:21:02   (  69.95, -68.96) 01/04/2020   16:21:54  (  69.96, -69.01)    2.24                52
 01/07/2020   06:58:34   (  70.12,  71.88) 01/07/2020   06:57:21  (  70.16,  71.84)    4.35                73
 01/07/2020   07:48:04   ( -70.02,-120.63) 01/07/2020   07:48:02  ( -70.00,-120.60)    2.43                 2
 01/07/2020   08:37:32   (  69.85,  46.77) 01/07/2020   08:38:45  (  69.85,  46.94)    6.30                73
 01/09/2020   23:15:02   (  70.12,-172.24) 01/09/2020   23:14:13  (  70.10,-172.29)    3.42                49
 01/10/2020   00:04:33   ( -69.97,  -4.82) 01/10/2020   00:04:55  ( -69.99,  -4.81)    2.30                22