Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 18.  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)
 04/20/2020   06:57:59   ( -70.11,-108.23) 04/20/2020   06:57:29  ( -70.13,-108.21)    2.48                30
 04/20/2020   07:47:26   (  70.00,  59.25) 04/20/2020   07:48:13  (  70.02,  59.28)    1.91                47
 04/22/2020   22:24:55   (  70.26,-159.78) 04/22/2020   22:23:42  (  70.27,-159.96)    7.03                73
 04/22/2020   23:14:26   ( -70.11,   7.63) 04/22/2020   23:14:23  ( -70.12,   7.58)    2.57                 3
 04/23/2020   00:03:53   (  69.99, 175.12) 04/23/2020   00:05:06  (  69.95, 175.14)    4.13                73
 04/25/2020   14:41:25   (  70.14, -44.08) 04/25/2020   14:40:35  (  70.15, -44.01)    2.75                50
 04/25/2020   15:30:55   ( -70.04, 123.42) 04/25/2020   15:31:17  ( -70.06, 123.45)    2.13                22
 04/28/2020   06:57:53   (  70.12,  71.78) 04/28/2020   06:57:30  (  70.15,  71.77)    2.77                23
 04/28/2020   07:47:23   ( -70.03,-120.72) 04/28/2020   07:48:12  ( -70.05,-120.76)    2.64                49
 04/30/2020   22:24:54   ( -70.23,  20.16) 04/30/2020   22:23:41  ( -70.24,  20.08)    3.49                73
 04/30/2020   23:14:21   (  70.10,-172.37) 04/30/2020   23:14:24  (  70.09,-172.37)    1.41                 3
 05/01/2020   00:03:52   ( -69.95,  -4.95) 05/01/2020   00:05:05  ( -69.93,  -4.82)    5.51                73