Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 14.  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)
 04/14/2020   22:24:58   ( -70.42,  20.45) 04/14/2020   22:23:46  ( -70.51,  19.66)   31.26                72
 04/14/2020   23:14:29   (  70.09,-172.38) 04/14/2020   23:14:24  (  70.07,-172.35)    1.67                 5
 04/15/2020   00:03:59   ( -69.98,  -4.89) 04/15/2020   00:05:06  ( -69.99,  -4.91)    1.01                67
 04/17/2020   14:41:29   ( -70.19, 136.01) 04/17/2020   14:40:34  ( -70.18, 135.95)    2.90                55
 04/17/2020   15:30:56   (  70.08, -56.51) 04/17/2020   15:31:18  (  70.06, -56.56)    3.05                22
 04/17/2020   16:20:39   ( -69.26, 110.01) 04/17/2020   16:21:47  ( -69.28, 111.90)   74.28                68
 04/20/2020   06:57:58   ( -70.13,-108.20) 04/20/2020   06:57:28  ( -70.11,-108.17)    2.80                30
 04/20/2020   07:47:25   (  70.02,  59.28) 04/20/2020   07:48:12  (  70.00,  59.30)    2.23                47
 04/22/2020   22:24:55   (  70.27,-159.76) 04/22/2020   22:23:43  (  70.30,-160.02)   10.23                72
 04/22/2020   23:14:26   ( -70.12,   7.66) 04/22/2020   23:14:23  ( -70.10,   7.62)    3.07                 3
 04/23/2020   00:03:54   (  69.95, 175.06) 04/23/2020   00:05:06  (  69.94, 175.17)    4.41                72
 04/25/2020   14:41:25   (  70.14, -44.06) 04/25/2020   14:40:35  (  70.14, -43.99)    2.94                50
 04/25/2020   15:30:55   ( -70.05, 123.43) 04/25/2020   15:31:17  ( -70.04, 123.48)    2.50                22