Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 9 28.  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)
 09/29/2017   22:25:39   ( -70.18,  20.20) 09/29/2017   22:24:32  ( -70.20,  20.12)    3.60                67
 09/29/2017   23:15:06   (  70.08,-172.30) 09/29/2017   23:15:16  (  70.07,-172.38)    3.12                10
 09/30/2017   00:04:41   ( -69.69,  -5.21) 09/30/2017   00:05:52  ( -69.67,  -4.47)   28.76                71
 10/02/2017   14:42:10   ( -70.13, 136.00) 10/02/2017   14:41:27  ( -70.11, 136.02)    2.02                43
 10/02/2017   15:31:37   (  70.02, -56.50) 10/02/2017   15:32:12  (  70.04, -56.56)    2.57                35
 10/05/2017   06:09:02   (  70.67,  85.04) 10/05/2017   06:07:52  (  70.74,  83.47)   58.21                70
 10/05/2017   06:58:41   ( -70.07,-108.21) 10/05/2017   06:58:23  ( -70.08,-108.16)    2.18                18
 10/05/2017   07:48:08   (  69.96,  59.29) 10/05/2017   07:49:07  (  69.95,  59.33)    2.00                59
 10/07/2017   22:25:40   (  70.16,-159.83) 10/07/2017   22:24:36  (  70.14,-159.80)    2.95                64
 10/07/2017   23:15:10   ( -70.05,   7.65) 10/07/2017   23:15:18  ( -70.05,   7.65)    0.54                 8
 10/08/2017   00:04:45   (  69.50, 174.54) 10/08/2017   00:05:54  (  69.50, 175.77)   48.05                69
 10/10/2017   14:42:10   (  70.14, -43.98) 10/10/2017   14:41:32  (  70.11, -43.99)    2.84                38
 10/10/2017   15:31:40   ( -70.04, 123.50) 10/10/2017   15:32:14  ( -70.02, 123.46)    2.12                34