Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 6 14.  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)
 06/15/2019   22:25:16   ( -70.15,  20.17) 06/15/2019   22:24:04  ( -70.13,  20.21)    2.76                72
 06/15/2019   23:14:43   (  70.04,-172.34) 06/15/2019   23:14:49  (  70.06,-172.37)    2.46                 6
 06/16/2019   00:04:15   ( -69.82,  -5.01) 06/16/2019   00:05:28  ( -69.81,  -4.69)   12.40                73
 06/18/2019   14:41:47   ( -70.10, 135.98) 06/18/2019   14:41:00  ( -70.11, 136.00)    2.22                47
 06/18/2019   15:31:14   (  69.99, -56.53) 06/18/2019   15:31:44  (  69.99, -56.51)    1.22                30
 06/21/2019   06:08:35   (  70.86,  85.35) 06/21/2019   06:07:27  (  70.87,  83.24)   77.21                68
 06/21/2019   06:58:16   ( -70.10,-108.14) 06/21/2019   06:57:55  ( -70.10,-108.21)    2.58                21
 06/21/2019   07:47:43   (  69.99,  59.35) 06/21/2019   07:48:39  (  69.98,  59.28)    2.68                56
 06/23/2019   22:25:17   (  70.14,-159.83) 06/23/2019   22:24:08  (  70.13,-159.80)    1.80                69
 06/23/2019   23:14:47   ( -70.04,   7.66) 06/23/2019   23:14:50  ( -70.04,   7.66)    0.44                 3
 06/24/2019   00:04:18   (  69.71, 174.84) 06/24/2019   00:05:29  (  69.66, 175.53)   27.41                71
 06/26/2019   14:41:47   (  70.14, -43.96) 06/26/2019   14:41:04  (  70.12, -44.02)    2.90                43
 06/26/2019   15:31:18   ( -69.98, 123.45) 06/26/2019   15:31:45  ( -69.97, 123.52)    2.65                27