Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 7 22.  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)
 07/22/2021   22:25:25   ( -70.12,  20.15) 07/22/2021   22:24:12  ( -70.11,  20.20)    2.10                73
 07/22/2021   23:14:52   (  70.02,-172.35) 07/22/2021   23:14:57  (  70.03,-172.38)    2.31                 5
 07/23/2021   00:04:24   ( -69.79,  -5.03) 07/23/2021   00:05:36  ( -69.79,  -4.70)   12.37                72
 07/25/2021   14:41:56   ( -70.10, 136.00) 07/25/2021   14:41:09  ( -70.10, 135.97)    1.04                47
 07/25/2021   15:31:23   (  69.99, -56.51) 07/25/2021   15:31:53  (  69.98, -56.53)    1.70                30
 07/28/2021   06:08:45   (  70.83,  85.33) 07/28/2021   06:07:37  (  70.86,  83.20)   77.78                68
 07/28/2021   06:58:27   ( -70.07,-108.16) 07/28/2021   06:58:05  ( -70.04,-108.17)    3.24                22
 07/28/2021   07:47:55   (  69.91,  59.25) 07/28/2021   07:48:49  (  69.92,  59.32)    3.17                54
 07/30/2021   22:25:28   (  70.14,-159.82) 07/30/2021   22:24:20  (  70.12,-159.85)    2.19                68
 07/30/2021   23:14:58   ( -70.04,   7.67) 07/30/2021   23:15:02  ( -70.04,   7.60)    2.78                 4
 07/31/2021   00:04:30   (  69.65, 174.78) 07/31/2021   00:05:41  (  69.65, 175.49)   27.42                71
 08/02/2021   14:41:59   (  70.05, -44.07) 08/02/2021   14:41:15  (  70.07, -44.00)    3.47                44
 08/02/2021   15:31:29   ( -69.95, 123.43) 08/02/2021   15:31:57  ( -69.98, 123.46)    2.96                28