Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 2 19.  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)
 02/21/2016   05:19:03   ( -71.19, -81.80) 02/21/2016   05:17:56  ( -71.25, -84.52)   97.63                67
 02/21/2016   06:08:46   (  70.22,  84.37) 02/21/2016   06:08:23  (  70.24,  84.43)    3.50                23
 02/21/2016   06:58:15   ( -70.16,-108.08) 02/21/2016   06:59:05  ( -70.16,-108.12)    1.51                50
 02/23/2016   21:35:45   ( -70.38,  32.84) 02/23/2016   21:34:32  ( -70.43,  32.61)   10.31                73
 02/23/2016   22:25:13   (  70.22,-159.75) 02/23/2016   22:25:14  (  70.21,-159.74)    0.91                 1
 02/23/2016   23:14:43   ( -70.11,   7.72) 02/23/2016   23:15:56  ( -70.13,   7.71)    2.16                73
 02/26/2016   13:52:14   ( -70.27, 148.56) 02/26/2016   13:51:21  ( -70.30, 148.60)    3.25                53
 02/26/2016   14:41:40   (  70.16, -43.95) 02/26/2016   14:42:04  (  70.19, -43.92)    3.15                24
 02/26/2016   15:31:24   ( -69.28, 122.48) 02/26/2016   15:32:30  ( -69.25, 124.78)   90.39                66
 02/29/2016   06:08:40   ( -70.27, -95.55) 02/29/2016   06:08:11  ( -70.27, -95.58)    1.14                29
 02/29/2016   06:58:07   (  70.16,  71.93) 02/29/2016   06:58:55  (  70.17,  71.89)    1.98                48
 03/02/2016   21:35:36   (  70.43,-147.07) 03/02/2016   21:34:23  (  70.51,-147.49)   18.46                73
 03/02/2016   22:25:08   ( -70.21,  20.25) 03/02/2016   22:25:01  ( -70.20,  20.31)    2.52                 7
 03/02/2016   23:14:35   (  70.10,-172.27) 03/02/2016   23:15:45  (  70.10,-172.23)    1.80                70