Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 4 12.  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)
 04/12/2019   22:24:49   ( -70.47,  20.55) 04/12/2019   22:23:37  ( -70.54,  19.69)   33.12                72
 04/12/2019   23:14:21   (  70.09,-172.35) 04/12/2019   23:14:15  (  70.11,-172.32)    2.08                 6
 04/13/2019   00:03:50   ( -70.03,  -4.79) 04/13/2019   00:04:57  ( -70.02,  -4.87)    3.50                67
 04/15/2019   14:41:22   ( -70.20, 136.04) 04/15/2019   14:40:28  ( -70.21, 135.96)    3.25                54
 04/15/2019   15:30:49   (  70.09, -56.47) 04/15/2019   15:31:12  (  70.10, -56.55)    3.18                23
 04/15/2019   16:20:32   ( -69.27, 110.04) 04/15/2019   16:21:40  ( -69.27, 111.99)   76.86                68
 04/18/2019   06:08:05   (  71.12,  85.67) 04/18/2019   06:06:59  (  71.14,  82.90)   99.89                66
 04/18/2019   06:57:51   ( -70.14,-108.16) 04/18/2019   06:57:24  ( -70.15,-108.18)    1.21                27
 04/18/2019   07:47:18   (  70.03,  59.32) 04/18/2019   07:48:08  (  70.04,  59.30)    1.65                50
 04/20/2019   22:24:49   (  70.18,-159.86) 04/20/2019   22:23:37  (  70.20,-159.80)    2.89                72
 04/20/2019   23:14:19   ( -70.08,   7.63) 04/20/2019   23:14:19  ( -70.09,   7.68)    2.28                 0
 04/21/2019   00:03:48   (  69.85, 174.96) 04/21/2019   00:05:00  (  69.83, 175.39)   16.80                72
 04/23/2019   14:41:17   (  70.17, -44.00) 04/23/2019   14:40:34  (  70.20, -44.03)    3.33                43
 04/23/2019   15:30:47   ( -70.07, 123.49) 04/23/2019   15:31:16  ( -70.09, 123.45)    2.80                29