Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 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)
 03/14/2018   06:57:59   ( -70.14,-108.14) 03/14/2018   06:57:25  ( -70.15,-108.16)    0.77                34
 03/14/2018   07:47:26   (  70.04,  59.35) 03/14/2018   07:48:09  (  70.02,  59.34)    1.97                43
 03/16/2018   22:24:54   (  70.33,-159.63) 03/16/2018   22:23:41  (  70.37,-160.05)   16.50                73
 03/16/2018   23:14:26   ( -70.10,   7.69) 03/16/2018   23:14:20  ( -70.12,   7.64)    2.47                 6
 03/17/2018   00:03:53   (  70.00, 175.18) 03/17/2018   00:05:04  (  70.00, 175.14)    1.66                71
 03/19/2018   14:41:24   (  70.17, -43.97) 03/19/2018   14:40:34  (  70.19, -44.01)    2.64                50
 03/19/2018   15:30:54   ( -70.06, 123.51) 03/19/2018   15:31:15  ( -70.05, 123.52)    2.02                21
 03/19/2018   16:20:37   (  69.07, -70.19) 03/19/2018   16:21:43  (  69.08, -67.76)   96.39                66
 03/22/2018   06:57:52   (  70.13,  71.84) 03/22/2018   06:57:29  (  70.12,  71.86)    0.61                23
 03/22/2018   07:47:22   ( -70.02,-120.67) 03/22/2018   07:48:11  ( -70.03,-120.68)    0.75                49
 03/24/2018   22:24:53   ( -70.19,  20.17) 03/24/2018   22:23:41  ( -70.22,  20.17)    2.76                72
 03/24/2018   23:14:20   (  70.07,-172.35) 03/24/2018   23:14:24  (  70.06,-172.27)    3.46                 4
 03/25/2018   00:03:52   ( -69.86,  -5.01) 03/25/2018   00:05:04  ( -69.85,  -4.65)   14.00                72