Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 11.  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)
 09/13/2017   22:25:33   ( -70.14,  20.16) 09/13/2017   22:24:22  ( -70.14,  20.23)    2.54                71
 09/13/2017   23:15:00   (  70.03,-172.34) 09/13/2017   23:15:06  (  70.02,-172.28)    2.68                 6
 09/14/2017   00:04:33   ( -69.76,  -5.09) 09/14/2017   00:05:45  ( -69.77,  -4.59)   19.33                72
 09/16/2017   14:42:01   ( -70.13, 136.03) 09/16/2017   14:41:18  ( -70.14, 135.99)    2.22                43
 09/16/2017   15:31:28   (  70.02, -56.48) 09/16/2017   15:32:02  (  70.02, -56.52)    1.75                34
 09/19/2017   06:08:52   (  70.65,  85.06) 09/19/2017   06:07:42  (  70.71,  83.54)   56.35                70
 09/19/2017   06:58:30   ( -70.11,-108.11) 09/19/2017   06:58:14  ( -70.09,-108.17)    2.74                16
 09/19/2017   07:47:57   (  70.00,  59.38) 09/19/2017   07:48:58  (  69.98,  59.32)    3.41                61
 09/21/2017   22:25:30   (  70.14,-159.82) 09/21/2017   22:24:28  (  70.14,-159.79)    1.38                62
 09/21/2017   23:15:00   ( -70.03,   7.66) 09/21/2017   23:15:10  ( -70.05,   7.67)    2.07                10
 09/22/2017   00:04:36   (  69.42, 174.47) 09/22/2017   00:05:45  (  69.46, 175.85)   54.12                69
 09/24/2017   14:41:59   (  70.10, -43.98) 09/24/2017   14:41:24  (  70.10, -43.96)    0.69                35
 09/24/2017   15:31:29   ( -70.00, 123.51) 09/24/2017   15:32:06  ( -70.01, 123.50)    0.79                37