Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 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)
 04/17/2017   14:41:19   (  70.20, -43.96) 04/17/2017   14:40:37  (  70.19, -44.01)    2.17                42
 04/17/2017   15:30:49   ( -70.09, 123.51) 04/17/2017   15:31:19  ( -70.09, 123.46)    1.77                30
 04/20/2017   06:08:08   ( -70.87, -94.74) 04/20/2017   06:07:00  ( -70.93, -96.74)   73.16                68
 04/20/2017   06:57:46   (  70.17,  71.86) 04/20/2017   06:57:31  (  70.15,  71.83)    2.63                15
 04/20/2017   07:47:16   ( -70.06,-120.66) 04/20/2017   07:48:13  ( -70.04,-120.70)    1.86                57
 04/22/2017   22:24:47   ( -70.23,  20.19) 04/22/2017   22:23:42  ( -70.20,  20.20)    3.37                65
 04/22/2017   23:14:14   (  70.13,-172.32) 04/22/2017   23:14:26  (  70.10,-172.34)    2.63                12
 04/23/2017   00:03:51   ( -69.63,  -5.37) 04/23/2017   00:05:01  ( -69.63,  -4.31)   40.98                70
 04/25/2017   14:41:15   ( -70.19, 136.01) 04/25/2017   14:40:38  ( -70.21, 135.95)    3.35                37
 04/25/2017   15:30:42   (  70.08, -56.50) 04/25/2017   15:31:21  (  70.06, -56.50)    1.98                39
 04/28/2017   06:08:08   (  70.52,  84.74) 04/28/2017   06:06:57  (  70.60,  83.80)   35.83                71
 04/28/2017   06:57:43   ( -70.14,-108.18) 04/28/2017   06:57:32  ( -70.12,-108.14)    2.94                11
 04/28/2017   07:47:10   (  70.03,  59.30) 04/28/2017   07:48:16  (  70.02,  59.33)    0.99                66