Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 5 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)
 05/14/2017   06:08:11   (  70.72,  85.17) 05/14/2017   06:07:02  (  70.75,  83.55)   59.72                69
 05/14/2017   06:57:50   ( -70.11,-108.09) 05/14/2017   06:57:33  ( -70.09,-108.08)    3.13                17
 05/14/2017   07:47:18   (  69.96,  59.34) 05/14/2017   07:48:17  (  69.96,  59.41)    2.79                59
 05/16/2017   22:24:51   (  70.17,-159.76) 05/16/2017   22:23:45  (  70.15,-159.73)    2.97                66
 05/16/2017   23:14:21   ( -70.06,   7.72) 05/16/2017   23:14:27  ( -70.06,   7.72)    0.22                 6
 05/17/2017   00:03:54   (  69.63, 174.76) 05/17/2017   00:05:05  (  69.62, 175.69)   36.02                71
 05/19/2017   14:41:23   (  70.11, -43.97) 05/19/2017   14:40:40  (  70.13, -43.93)    2.33                43
 05/19/2017   15:30:52   ( -70.06, 123.59) 05/19/2017   15:31:22  ( -70.04, 123.52)    3.40                30
 05/22/2017   06:08:13   ( -70.98, -94.44) 05/22/2017   06:07:06  ( -71.01, -96.89)   88.62                67
 05/22/2017   06:57:54   (  70.11,  71.90) 05/22/2017   06:57:35  (  70.11,  71.87)    1.08                19
 05/22/2017   07:47:24   ( -70.00,-120.61) 05/22/2017   07:48:17  ( -70.02,-120.68)    3.21                53
 05/24/2017   22:24:59   ( -70.15,  20.20) 05/24/2017   22:23:45  ( -70.16,  20.26)    2.52                74
 05/24/2017   23:14:26   (  70.04,-172.32) 05/24/2017   23:14:29  (  70.04,-172.25)    2.49                 3
 05/25/2017   00:03:57   ( -69.89,  -4.90) 05/25/2017   00:05:10  ( -69.90,  -4.72)    7.18                73
 05/27/2017   14:41:29   ( -70.14, 136.06) 05/27/2017   14:40:39  ( -70.15, 136.06)    0.28                50
 05/27/2017   15:30:56   (  70.03, -56.46) 05/27/2017   15:31:23  (  70.03, -56.46)    0.12                27