Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 8 17.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/20/2017   02:56:17   ( -68.39, -45.44) 08/20/2017   02:57:18  ( -68.39, -45.50)    2.58                61
 08/20/2017   03:47:01   (  68.27, 122.02) 08/20/2017   03:46:45  (  68.29, 122.02)    1.65                16
 08/20/2017   04:37:34   ( -67.69, -69.93) 08/20/2017   04:36:23  ( -67.73, -71.00)   45.06                71
 08/22/2017   19:13:14   ( -68.37,  70.36) 08/22/2017   19:13:48  ( -68.37,  70.34)    0.52                34
 08/22/2017   20:03:58   (  68.25,-122.19) 08/22/2017   20:03:15  (  68.25,-122.14)    1.88                43
 08/25/2017   10:39:34   (  68.71,  18.35) 08/25/2017   10:40:45  (  68.60,  18.87)   24.92                71
 08/25/2017   11:30:11   ( -68.34,-173.85) 08/25/2017   11:30:18  ( -68.33,-173.83)    2.32                 7
 08/25/2017   12:20:54   (  68.18,  -6.33) 08/25/2017   12:19:46  (  68.16,  -6.38)    3.19                68
 08/28/2017   02:56:25   (  68.43, 134.49) 08/28/2017   02:57:16  (  68.44, 134.55)    2.91                51
 08/28/2017   03:47:06   ( -68.27, -57.99) 08/28/2017   03:46:47  ( -68.28, -58.01)    0.81                19
 08/28/2017   04:37:35   (  67.35, 110.45) 08/28/2017   04:36:27  (  67.43, 108.67)   76.88                68
 08/30/2017   19:13:21   (  68.36,-109.66) 08/30/2017   19:13:46  (  68.38,-109.64)    2.15                25
 08/30/2017   20:04:02   ( -68.20,  57.86) 08/30/2017   20:03:17  ( -68.22,  57.80)    3.18                45