Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 9 21.  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)
 09/22/2018   06:08:35   (  70.18,  84.37) 09/22/2018   06:07:31  (  70.18,  84.42)    1.91                64
 09/22/2018   06:58:05   ( -70.07,-108.16) 09/22/2018   06:58:13  ( -70.08,-108.13)    2.19                 8
 09/22/2018   07:47:40   (  69.53,  58.73) 09/22/2018   07:48:49  (  69.54,  59.99)   48.84                69
 09/24/2018   22:25:05   (  70.16,-159.79) 09/24/2018   22:24:26  (  70.15,-159.78)    0.70                39
 09/24/2018   23:14:35   ( -70.05,   7.69) 09/24/2018   23:15:08  ( -70.06,   7.68)    1.11                33
 09/27/2018   13:51:59   ( -70.79, 149.38) 09/27/2018   13:50:50  ( -70.87, 147.53)   68.44                69
 09/27/2018   14:41:36   (  70.14, -43.94) 09/27/2018   14:41:22  (  70.13, -43.98)    1.59                14
 09/27/2018   15:31:06   ( -70.03, 123.54) 09/27/2018   15:32:04  ( -70.04, 123.48)    2.48                58
 09/30/2018   06:08:40   ( -70.22, -95.58) 09/30/2018   06:07:34  ( -70.23, -95.66)    2.93                66
 09/30/2018   06:58:08   (  70.06,  71.82) 09/30/2018   06:58:17  (  70.06,  71.90)    2.95                 9
 09/30/2018   07:47:43   ( -69.68,-121.07) 09/30/2018   07:48:54  ( -69.70,-120.24)   31.88                71
 10/02/2018   22:25:12   ( -70.14,  20.18) 10/02/2018   22:24:29  ( -70.16,  20.22)    1.98                43
 10/02/2018   23:14:39   (  70.03,-172.34) 10/02/2018   23:15:13  (  70.05,-172.31)    2.30                34
 10/05/2018   13:52:02   (  70.76, -30.67) 10/05/2018   13:50:53  (  70.82, -32.39)   63.23                69
 10/05/2018   14:41:42   ( -70.12, 136.01) 10/05/2018   14:41:24  ( -70.14, 136.01)    2.64                18
 10/05/2018   15:31:09   (  70.00, -56.51) 10/05/2018   15:32:07  (  69.98, -56.43)    3.60                58