Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 23.  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)
 12/24/2021   13:52:33   ( -70.87, 149.46) 12/24/2021   13:51:25  ( -70.94, 147.35)   77.00                68
 12/24/2021   14:42:12   (  70.12, -44.02) 12/24/2021   14:41:56  (  70.13, -44.06)    2.36                16
 12/24/2021   15:31:42   ( -70.00, 123.45) 12/24/2021   15:32:37  ( -70.00, 123.46)    0.34                55
 12/27/2021   06:09:13   ( -70.21, -95.64) 12/27/2021   06:08:03  ( -70.21, -95.71)    2.32                70
 12/27/2021   06:58:40   (  70.11,  71.85) 12/27/2021   06:58:47  (  70.09,  71.78)    2.86                 7
 12/27/2021   07:48:13   ( -69.83,-120.90) 12/27/2021   07:49:25  ( -69.80,-120.46)   17.54                72
 12/29/2021   22:25:42   ( -70.14,  20.14) 12/29/2021   22:24:54  ( -70.17,  20.14)    3.49                48
 12/29/2021   23:15:09   (  70.03,-172.37) 12/29/2021   23:15:38  (  70.06,-172.38)    2.88                29
 01/01/2022   13:52:25   (  70.99, -30.35) 01/01/2022   13:51:18  (  71.07, -32.85)   90.68                67
 01/01/2022   14:42:09   ( -70.11, 135.98) 01/01/2022   14:41:44  ( -70.14, 135.97)    2.73                25
 01/01/2022   15:31:36   (  70.00, -56.53) 01/01/2022   15:32:28  (  70.03, -56.55)    2.87                52
 01/04/2022   06:09:06   (  70.23,  84.41) 01/04/2022   06:07:54  (  70.25,  84.26)    5.90                72
 01/04/2022   06:58:37   ( -70.08,-108.19) 01/04/2022   06:58:34  ( -70.06,-108.12)    3.52                 3
 01/04/2022   07:48:05   (  69.91,  59.22) 01/04/2022   07:49:17  (  69.89,  59.44)    8.37                72