Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 18.  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)
 12/19/2021   06:09:15   (  70.17,  84.29) 12/19/2021   06:08:13  (  70.17,  84.33)    1.84                62
 12/19/2021   06:58:44   ( -70.11,-108.16) 12/19/2021   06:58:55  ( -70.09,-108.23)    3.26                11
 12/19/2021   07:48:21   (  69.45,  58.58) 12/19/2021   07:49:30  (  69.49,  59.97)   54.53                69
 12/21/2021   22:25:44   (  70.13,-159.89) 12/21/2021   22:25:04  (  70.12,-159.81)    3.21                40
 12/21/2021   23:15:14   ( -70.02,   7.59) 12/21/2021   23:15:46  ( -70.04,   7.63)    2.51                32
 12/24/2021   13:52:33   ( -70.90, 149.50) 12/24/2021   13:51:25  ( -70.92, 147.38)   77.04                68
 12/24/2021   14:42:12   (  70.14, -43.99) 12/24/2021   14:41:56  (  70.12, -44.04)    2.43                16
 12/24/2021   15:31:43   ( -69.98, 123.41) 12/24/2021   15:32:37  ( -69.98, 123.49)    3.09                54
 12/27/2021   06:09:14   ( -70.20, -95.67) 12/27/2021   06:08:03  ( -70.19, -95.67)    0.87                71
 12/27/2021   06:58:41   (  70.08,  71.82) 12/27/2021   06:58:47  (  70.08,  71.82)    0.99                 6
 12/27/2021   07:48:14   ( -69.82,-120.93) 12/27/2021   07:49:26  ( -69.83,-120.50)   16.57                72
 12/29/2021   22:25:42   ( -70.14,  20.13) 12/29/2021   22:24:53  ( -70.14,  20.19)    2.05                49
 12/29/2021   23:15:09   (  70.02,-172.38) 12/29/2021   23:15:37  (  70.03,-172.34)    1.95                28