Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 8 17.  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)
 08/18/2021   14:42:04   (  70.09, -44.02) 08/18/2021   14:41:24  (  70.06, -44.00)    3.19                40
 08/18/2021   15:31:34   ( -69.98, 123.46) 08/18/2021   15:32:06  ( -69.98, 123.44)    0.83                32
 08/21/2021   06:08:57   ( -70.73, -94.84) 08/21/2021   06:07:48  ( -70.78, -96.68)   67.69                69
 08/21/2021   06:58:35   (  70.02,  71.77) 08/21/2021   06:58:20  (  70.02,  71.82)    1.98                15
 08/21/2021   07:48:05   ( -69.92,-120.75) 08/21/2021   07:49:02  ( -69.94,-120.73)    2.59                57
 08/23/2021   22:25:38   ( -70.12,  20.14) 08/23/2021   22:24:32  ( -70.11,  20.15)    1.11                66
 08/23/2021   23:15:05   (  70.01,-172.37) 08/23/2021   23:15:16  (  69.99,-172.36)    1.79                11
 08/24/2021   00:04:41   ( -69.58,  -5.34) 08/24/2021   00:05:52  ( -69.58,  -4.44)   34.76                71
 08/26/2021   14:42:09   ( -70.05, 135.92) 08/26/2021   14:41:28  ( -70.07, 135.97)    3.23                41
 08/26/2021   15:31:36   (  69.93, -56.60) 08/26/2021   15:32:12  (  69.96, -56.55)    3.31                36
 08/29/2021   06:09:00   (  70.57,  84.92) 08/29/2021   06:07:50  (  70.61,  83.58)   50.02                70
 08/29/2021   06:58:38   ( -70.03,-108.22) 08/29/2021   06:58:23  ( -70.04,-108.21)    0.96                15
 08/29/2021   07:48:05   (  69.91,  59.26) 08/29/2021   07:49:07  (  69.93,  59.27)    1.63                62