Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 7 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)
 07/17/2018   14:41:06   ( -70.16, 136.11) 07/17/2018   14:40:38  ( -70.17, 136.07)    1.79                28
 07/17/2018   15:30:33   (  70.06, -56.39) 07/17/2018   15:31:22  (  70.05, -56.43)    2.66                49
 07/20/2018   06:08:04   (  70.34,  84.61) 07/20/2018   06:06:52  (  70.39,  84.19)   16.83                72
 07/20/2018   06:57:36   ( -70.12,-108.07) 07/20/2018   06:57:30  ( -70.09,-108.03)    3.20                 6
 07/20/2018   07:47:03   (  70.01,  59.42) 07/20/2018   07:48:15  (  70.02,  59.38)    2.23                72
 07/22/2018   22:24:37   (  70.17,-159.75) 07/22/2018   22:23:42  (  70.16,-159.68)    3.07                55
 07/22/2018   23:14:07   ( -70.07,   7.73) 07/22/2018   23:14:24  ( -70.07,   7.78)    1.71                17
 07/23/2018   00:03:48   (  69.19, 174.18) 07/23/2018   00:04:54  (  69.21, 176.35)   85.58                66
 07/25/2018   14:41:07   (  70.17, -43.87) 07/25/2018   14:40:36  (  70.14, -43.87)    3.12                31
 07/25/2018   15:30:37   ( -70.06, 123.62) 07/25/2018   15:31:18  ( -70.05, 123.59)    2.28                41
 07/28/2018   06:08:05   ( -70.55, -95.08) 07/28/2018   06:06:54  ( -70.65, -96.21)   43.45                71
 07/28/2018   06:57:38   (  70.11,  71.92) 07/28/2018   06:57:30  (  70.13,  71.92)    2.28                 8
 07/28/2018   07:47:08   ( -70.01,-120.59) 07/28/2018   07:48:12  ( -70.03,-120.61)    2.64                64