Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 5 10.  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)
 05/11/2017   14:41:19   ( -70.12, 136.04) 05/11/2017   14:40:38  ( -70.10, 136.12)    3.59                41
 05/11/2017   15:30:46   (  70.02, -56.46) 05/11/2017   15:31:23  (  70.03, -56.47)    1.87                37
 05/14/2017   06:08:11   (  70.67,  85.10) 05/14/2017   06:07:01  (  70.74,  83.56)   57.14                70
 05/14/2017   06:57:49   ( -70.12,-108.07) 05/14/2017   06:57:33  ( -70.13,-108.15)    2.93                16
 05/14/2017   07:47:17   (  69.96,  59.35) 05/14/2017   07:48:16  (  69.96,  59.42)    2.97                59
 05/16/2017   22:24:51   (  70.18,-159.75) 05/16/2017   22:23:46  (  70.19,-159.80)    2.50                65
 05/16/2017   23:14:21   ( -70.07,   7.73) 05/16/2017   23:14:27  ( -70.05,   7.74)    2.17                 6
 05/17/2017   00:03:55   (  69.58, 174.69) 05/17/2017   00:05:05  (  69.62, 175.70)   39.36                70
 05/19/2017   14:41:23   (  70.12, -43.96) 05/19/2017   14:40:40  (  70.12, -43.91)    1.95                43
 05/19/2017   15:30:53   ( -70.01, 123.52) 05/19/2017   15:31:22  ( -70.03, 123.54)    1.96                29
 05/22/2017   06:08:13   ( -70.98, -94.44) 05/22/2017   06:07:06  ( -71.00, -96.87)   88.12                67
 05/22/2017   06:57:54   (  70.11,  71.90) 05/22/2017   06:57:35  (  70.10,  71.89)    0.77                19
 05/22/2017   07:47:24   ( -70.01,-120.61) 05/22/2017   07:48:17  ( -70.01,-120.66)    1.94                53