Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 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)
 06/23/2021   14:41:48   ( -70.13, 136.03) 06/23/2021   14:40:46  ( -70.12, 136.00)    1.33                62
 06/23/2021   15:31:16   (  69.98, -56.54) 06/23/2021   15:31:30  (  70.01, -56.51)    3.22                14
 06/23/2021   16:20:53   ( -69.42, 110.33) 06/23/2021   16:22:02  ( -69.44, 111.65)   51.47                69
 06/26/2021   06:58:18   ( -70.06,-108.19) 06/26/2021   06:57:41  ( -70.05,-108.11)    3.35                37
 06/26/2021   07:47:45   (  69.96,  59.31) 06/26/2021   07:48:26  (  69.98,  59.29)    2.84                41
 06/28/2021   22:25:14   (  70.37,-159.50) 06/28/2021   22:24:02  (  70.44,-160.27)   29.91                72
 06/28/2021   23:14:48   ( -70.04,   7.66) 06/28/2021   23:14:38  ( -70.02,   7.69)    2.17                10
 06/29/2021   00:04:15   (  69.94, 175.16) 06/29/2021   00:05:22  (  69.91, 175.17)    2.84                67
 07/01/2021   14:41:48   (  70.12, -43.97) 07/01/2021   14:40:53  (  70.10, -43.98)    2.48                55
 07/01/2021   15:31:18   ( -70.02, 123.51) 07/01/2021   15:31:35  ( -70.00, 123.48)    1.82                17
 07/01/2021   16:20:58   (  69.19, -69.97) 07/01/2021   16:22:05  (  69.15, -67.96)   79.49                67
 07/04/2021   06:58:18   (  70.09,  71.86) 07/04/2021   06:57:50  (  70.08,  71.81)    2.23                28
 07/04/2021   07:47:48   ( -69.99,-120.65) 07/04/2021   07:48:32  ( -69.98,-120.72)    2.78                44