Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 8 30.  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)
 08/31/2021   22:25:38   (  70.14,-159.83) 08/31/2021   22:24:37  (  70.13,-159.89)    2.85                61
 08/31/2021   23:15:09   ( -69.98,   7.57) 08/31/2021   23:15:18  ( -69.99,   7.64)    2.89                 9
 09/01/2021   00:04:44   (  69.43, 174.47) 09/01/2021   00:05:53  (  69.39, 175.83)   53.55                69
 09/03/2021   14:42:09   (  70.08, -44.04) 09/03/2021   14:41:32  (  70.05, -44.01)    2.86                37
 09/03/2021   15:31:39   ( -69.97, 123.44) 09/03/2021   15:32:14  ( -69.96, 123.45)    0.86                35
 09/06/2021   06:09:04   ( -70.61, -95.03) 09/06/2021   06:07:54  ( -70.67, -96.52)   55.57                70
 09/06/2021   06:58:39   (  70.06,  71.82) 09/06/2021   06:58:28  (  70.04,  71.79)    2.95                11
 09/06/2021   07:48:09   ( -69.96,-120.70) 09/06/2021   07:49:10  ( -69.94,-120.75)    2.74                61
 09/08/2021   22:25:42   ( -70.15,  20.18) 09/08/2021   22:24:40  ( -70.13,  20.10)    3.70                62
 09/08/2021   23:15:10   (  69.98,-172.41) 09/08/2021   23:15:23  (  69.97,-172.34)    3.07                13
 09/09/2021   00:04:48   ( -69.44,  -5.52) 09/09/2021   00:05:57  ( -69.45,  -4.25)   49.48                69
 09/11/2021   14:42:12   ( -70.07, 135.95) 09/11/2021   14:41:34  ( -70.06, 135.98)    1.43                38
 09/11/2021   15:31:39   (  69.95, -56.57) 09/11/2021   15:32:18  (  69.96, -56.56)    0.81                39