Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 15.  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)
 10/16/2021   06:09:17   (  70.41,  84.65) 10/16/2021   06:08:06  (  70.46,  83.80)   32.29                71
 10/16/2021   06:58:51   ( -70.07,-108.21) 10/16/2021   06:58:42  ( -70.05,-108.24)    2.98                 9
 10/16/2021   07:48:19   (  69.92,  59.22) 10/16/2021   07:49:26  (  69.93,  59.24)    1.66                67
 10/18/2021   22:25:51   (  70.10,-159.92) 10/18/2021   22:24:58  (  70.13,-159.92)    3.00                53
 10/18/2021   23:15:21   ( -69.99,   7.55) 10/18/2021   23:15:39  ( -69.98,   7.63)    3.16                18
 10/19/2021   00:05:02   (  69.11, 174.02) 10/19/2021   00:06:08  (  69.07, 176.25)   89.00                66
 10/21/2021   14:42:21   (  70.06, -44.10) 10/21/2021   14:41:56  (  70.06, -44.06)    1.28                25
 10/21/2021   15:31:51   ( -69.95, 123.38) 10/21/2021   15:32:38  ( -69.96, 123.41)    1.46                47
 10/24/2021   06:09:23   ( -70.18, -95.69) 10/24/2021   06:08:11  ( -70.16, -95.76)    3.31                72
 10/24/2021   06:58:51   (  70.02,  71.72) 10/24/2021   06:58:54  (  70.00,  71.80)    3.49                 3
 10/24/2021   07:48:22   ( -69.85,-120.87) 10/24/2021   07:49:35  ( -69.84,-120.65)    8.65                73
 10/26/2021   22:25:54   ( -70.07,  20.04) 10/26/2021   22:25:09  ( -70.09,  20.10)    3.20                45
 10/26/2021   23:15:21   (  69.96,-172.47) 10/26/2021   23:15:53  (  69.99,-172.43)    3.30                32