Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 5 16.  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)
 05/17/2018   06:07:54   (  70.26,  84.34) 05/17/2018   06:06:59  (  70.25,  84.30)    1.42                55
 05/17/2018   06:57:24   ( -70.14,-108.20) 05/17/2018   06:57:41  ( -70.16,-108.24)    2.89                17
 05/17/2018   07:47:04   (  69.32,  58.33) 05/17/2018   07:48:11  (  69.30,  60.34)   79.10                67
 05/19/2018   22:24:21   (  70.21,-159.86) 05/19/2018   22:23:52  (  70.18,-159.82)    2.89                29
 05/19/2018   23:13:51   ( -70.09,   7.61) 05/19/2018   23:14:34  ( -70.09,   7.64)    1.21                43
 05/22/2018   13:51:19   ( -70.42, 148.68) 05/22/2018   13:50:06  ( -70.44, 148.25)   16.36                73
 05/22/2018   14:40:49   (  70.15, -44.06) 05/22/2018   14:40:47  (  70.17, -44.02)    2.88                 2
 05/22/2018   15:30:18   ( -70.09, 123.49) 05/22/2018   15:31:29  ( -70.08, 123.44)    2.70                71
 05/25/2018   06:07:49   ( -70.25, -95.68) 05/25/2018   06:06:58  ( -70.27, -95.71)    1.99                51
 05/25/2018   06:57:16   (  70.14,  71.81) 05/25/2018   06:57:42  (  70.16,  71.77)    2.24                26
 05/25/2018   07:47:02   ( -69.15,-121.90) 05/25/2018   07:48:07  ( -69.16,-119.45)   96.90                65
 05/27/2018   21:34:33   (  71.06,-146.22) 05/27/2018   21:33:26  (  71.14,-148.68)   89.03                67
 05/27/2018   22:24:17   ( -70.19,  20.11) 05/27/2018   22:23:52  ( -70.20,  20.16)    2.47                25
 05/27/2018   23:13:44   (  70.07,-172.41) 05/27/2018   23:14:36  (  70.09,-172.36)    2.76                52
 05/30/2018   13:51:13   (  70.28, -31.51) 05/30/2018   13:50:04  (  70.29, -31.52)    1.37                69
 05/30/2018   14:40:43   ( -70.18, 135.97) 05/30/2018   14:40:46  ( -70.19, 135.95)    1.92                 3
 05/30/2018   15:30:14   (  69.84, -56.86) 05/30/2018   15:31:25  (  69.82, -56.17)   26.26                71