Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 8 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)
 08/23/2021   22:25:38   ( -70.12,  20.15) 08/23/2021   22:24:32  ( -70.10,  20.16)    2.25                66
 08/23/2021   23:15:05   (  70.02,-172.36) 08/23/2021   23:15:17  (  70.03,-172.43)    3.08                12
 08/24/2021   00:04:41   ( -69.58,  -5.33) 08/24/2021   00:05:52  ( -69.58,  -4.43)   34.79                71
 08/26/2021   14:42:08   ( -70.05, 135.93) 08/26/2021   14:41:27  ( -70.07, 135.98)    2.79                41
 08/26/2021   15:31:35   (  69.94, -56.58) 08/26/2021   15:32:11  (  69.95, -56.53)    2.12                36
 08/29/2021   06:09:00   (  70.57,  84.93) 08/29/2021   06:07:50  (  70.60,  83.59)   49.59                70
 08/29/2021   06:58:38   ( -70.03,-108.23) 08/29/2021   06:58:23  ( -70.04,-108.20)    1.11                15
 08/29/2021   07:48:05   (  69.92,  59.26) 08/29/2021   07:49:07  (  69.92,  59.28)    0.80                62
 08/31/2021   22:25:38   (  70.10,-159.87) 08/31/2021   22:24:37  (  70.10,-159.85)    1.02                61
 08/31/2021   23:15:08   ( -70.00,   7.62) 08/31/2021   23:15:19  ( -70.00,   7.62)    0.10                11
 09/01/2021   00:04:44   (  69.39, 174.42) 09/01/2021   00:05:53  (  69.36, 175.87)   56.75                69
 09/03/2021   14:42:08   (  70.07, -44.04) 09/03/2021   14:41:33  (  70.07, -44.04)    0.38                35
 09/03/2021   15:31:38   ( -69.97, 123.45) 09/03/2021   15:32:15  ( -69.97, 123.43)    0.90                37