Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 2 12.  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)
 02/12/2021   23:14:58   (  70.10,-172.30) 02/12/2021   23:14:18  (  70.10,-172.36)    2.25                40
 02/13/2021   00:04:28   ( -69.98,  -4.84) 02/13/2021   00:04:59  ( -69.95,  -4.82)    3.46                31
 02/15/2021   14:41:48   ( -70.76, 136.91) 02/15/2021   14:40:39  ( -70.78, 135.01)   69.43                69
 02/15/2021   15:31:26   (  70.06, -56.48) 02/15/2021   15:31:11  (  70.04, -56.51)    2.23                15
 02/15/2021   16:20:56   ( -69.95, 110.99) 02/15/2021   16:21:53  ( -69.95, 110.95)    1.60                57
 02/18/2021   06:58:28   ( -70.12,-108.16) 02/18/2021   06:57:21  ( -70.10,-108.13)    2.55                67
 02/18/2021   07:47:55   (  70.02,  59.34) 02/18/2021   07:48:05  (  69.99,  59.34)    2.78                10
 02/18/2021   08:37:31   ( -69.58,-133.64) 02/18/2021   08:38:41  ( -69.58,-132.73)   35.20                70
 02/20/2021   23:14:57   ( -70.08,   7.66) 02/20/2021   23:14:16  ( -70.10,   7.63)    2.87                41
 02/21/2021   00:04:24   (  69.97, 175.15) 02/21/2021   00:04:59  (  69.94, 175.19)    3.26                35
 02/23/2021   14:41:47   (  70.63, -43.29) 02/23/2021   14:40:38  (  70.68, -44.82)   56.76                69
 02/23/2021   15:31:26   ( -70.03, 123.47) 02/23/2021   15:31:10  ( -70.05, 123.48)    2.74                16
 02/23/2021   16:20:53   (  69.92, -69.04) 02/23/2021   16:21:54  (  69.95, -69.05)    3.39                61