Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 3 13.  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)
 03/13/2017   22:25:05   (  70.39,-159.54) 03/13/2017   22:23:53  (  70.45,-160.20)   25.17                72
 03/13/2017   23:14:38   ( -70.11,   7.68) 03/13/2017   23:14:30  ( -70.10,   7.66)    1.55                 8
 03/14/2017   00:04:06   (  69.96, 175.11) 03/14/2017   00:05:14  (  69.98, 175.15)    3.26                68
 03/16/2017   14:41:35   (  70.19, -43.96) 03/16/2017   14:40:40  (  70.18, -44.00)    2.10                55
 03/16/2017   15:31:05   ( -70.08, 123.51) 03/16/2017   15:31:22  ( -70.09, 123.46)    2.59                17
 03/16/2017   16:20:45   (  69.25, -69.96) 03/16/2017   16:21:52  (  69.23, -67.98)   78.02                67
 03/19/2017   06:58:03   (  70.15,  71.86) 03/19/2017   06:57:32  (  70.13,  71.86)    2.45                31
 03/19/2017   07:47:33   ( -70.04,-120.66) 03/19/2017   07:48:14  ( -70.03,-120.68)    1.07                41
 03/21/2017   22:24:59   ( -70.49,  20.59) 03/21/2017   22:23:47  ( -70.54,  19.68)   34.45                72
 03/21/2017   23:14:31   (  70.10,-172.32) 03/21/2017   23:14:25  (  70.13,-172.36)    3.28                 6
 03/22/2017   00:04:01   ( -69.99,  -4.84) 03/22/2017   00:05:06  ( -69.97,  -4.81)    2.61                65
 03/24/2017   14:41:32   ( -70.16, 136.00) 03/24/2017   14:40:33  ( -70.17, 136.04)    1.73                59
 03/24/2017   15:30:59   (  70.05, -56.51) 03/24/2017   15:31:17  (  70.08, -56.51)    3.10                18
 03/24/2017   16:20:39   ( -69.40, 110.22) 03/24/2017   16:21:48  ( -69.39, 111.83)   62.73                69
 03/27/2017   06:57:58   ( -70.16,-108.11) 03/27/2017   06:57:25  ( -70.17,-108.18)    2.82                33
 03/27/2017   07:47:25   (  70.05,  59.37) 03/27/2017   07:48:08  (  70.03,  59.35)    2.21                43