Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 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)
 12/16/2018   14:41:47   (  70.09, -44.05) 12/16/2018   14:41:17  (  70.10, -43.97)    2.94                30
 12/16/2018   15:31:16   ( -70.02, 123.50) 12/16/2018   15:31:59  ( -70.00, 123.48)    2.26                43
 12/19/2018   06:08:44   ( -70.41, -95.35) 12/19/2018   06:07:32  ( -70.48, -96.11)   29.39                72
 12/19/2018   06:58:15   (  70.09,  71.83) 12/19/2018   06:58:11  (  70.11,  71.78)    3.25                 4
 12/19/2018   07:47:45   ( -69.97,-120.69) 12/19/2018   07:48:52  ( -69.96,-120.68)    1.67                67
 12/21/2018   22:25:18   ( -70.14,  20.15) 12/21/2018   22:24:21  ( -70.17,  20.14)    3.13                57
 12/21/2018   23:14:45   (  70.04,-172.35) 12/21/2018   23:15:04  (  70.02,-172.31)    3.05                19
 12/22/2018   00:04:26   ( -69.32,  -5.70) 12/22/2018   00:05:34  ( -69.28,  -3.92)   70.07                68
 12/24/2018   14:41:48   ( -70.11, 135.98) 12/24/2018   14:41:15  ( -70.13, 135.97)    2.26                33
 12/24/2018   15:31:15   (  70.00, -56.53) 12/24/2018   15:31:58  (  69.98, -56.49)    3.09                43
 12/27/2018   06:08:44   (  70.41,  84.66) 12/27/2018   06:07:32  (  70.46,  83.90)   28.66                72
 12/27/2018   06:58:18   ( -70.09,-108.18) 12/27/2018   06:58:09  ( -70.09,-108.20)    1.08                 9
 12/27/2018   07:47:45   (  69.97,  59.31) 12/27/2018   07:48:53  (  70.00,  59.26)    3.12                68
 12/29/2018   22:25:17   (  70.17,-159.81) 12/29/2018   22:24:20  (  70.17,-159.86)    1.81                57
 12/29/2018   23:14:47   ( -70.07,   7.68) 12/29/2018   23:15:02  ( -70.06,   7.63)    2.65                15
 12/30/2018   00:04:26   (  69.29, 174.26) 12/30/2018   00:05:34  (  69.32, 176.01)   68.88                68