Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 8 20.  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)
 08/20/2017   22:25:23   (  70.47,-159.35) 08/20/2017   22:24:12  (  70.50,-160.30)   35.37                71
 08/20/2017   23:14:58   ( -70.09,   7.72) 08/20/2017   23:14:48  ( -70.09,   7.67)    1.99                10
 08/21/2017   00:04:25   (  69.98, 175.22) 08/21/2017   00:05:32  (  69.98, 175.15)    2.94                67
 08/23/2017   14:41:59   (  70.12, -43.98) 08/23/2017   14:41:02  (  70.12, -43.92)    2.14                57
 08/23/2017   15:31:29   ( -70.01, 123.50) 08/23/2017   15:31:44  ( -70.01, 123.55)    1.72                15
 08/23/2017   16:21:08   (  69.24, -69.90) 08/23/2017   16:22:15  (  69.22, -67.98)   75.94                67
 08/26/2017   06:58:29   (  70.10,  71.87) 08/26/2017   06:57:59  (  70.10,  71.87)    0.11                30
 08/26/2017   07:47:59   ( -69.99,-120.65) 08/26/2017   07:48:41  ( -69.99,-120.66)    0.48                42
 08/28/2017   22:25:28   ( -70.35,  20.46) 08/28/2017   22:24:15  ( -70.40,  19.86)   23.18                73
 08/28/2017   23:14:58   (  70.07,-172.29) 08/28/2017   23:14:55  (  70.08,-172.35)    2.61                 3
 08/29/2017   00:04:28   ( -69.97,  -4.80) 08/29/2017   00:05:37  ( -69.98,  -4.87)    2.74                69
 08/31/2017   14:42:01   ( -70.15, 136.06) 08/31/2017   14:41:07  ( -70.12, 136.06)    3.64                54
 08/31/2017   15:31:28   (  70.04, -56.46) 08/31/2017   15:31:51  (  70.02, -56.48)    2.16                23