Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 1 9.  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)
 01/10/2017   18:22:48   (  68.40, -97.10) 01/10/2017   18:23:53  (  68.40, -97.16)    2.72                65
 01/10/2017   19:13:30   ( -68.32,  70.32) 01/10/2017   19:13:23  ( -68.29,  70.34)    3.12                 7
 01/10/2017   20:04:07   (  67.81,-121.73) 01/10/2017   20:02:55  (  67.89,-122.48)   32.60                72
 01/13/2017   10:39:42   (  68.39,  18.68) 01/13/2017   10:40:21  (  68.38,  18.70)    1.45                39
 01/13/2017   11:30:23   ( -68.26,-173.83) 01/13/2017   11:29:51  ( -68.28,-173.79)    2.77                32
 01/16/2017   02:06:02   ( -69.10, -33.80) 01/16/2017   02:07:11  ( -69.04, -32.24)   62.33                69
 01/16/2017   02:56:34   (  68.33, 134.53) 01/16/2017   02:56:49  (  68.31, 134.50)    3.22                15
 01/16/2017   03:47:15   ( -68.20, -57.98) 01/16/2017   03:46:19  ( -68.21, -57.99)    1.00                56
 01/18/2017   18:22:43   ( -68.40,  82.91) 01/18/2017   18:23:50  ( -68.41,  82.86)    2.15                67
 01/18/2017   19:13:27   (  68.28,-109.62) 01/18/2017   19:13:17  (  68.29,-109.64)    1.50                10
 01/18/2017   20:04:03   ( -67.87,  58.20) 01/18/2017   20:02:51  ( -67.97,  57.61)   26.91                72
 01/21/2017   10:39:37   ( -68.40,-161.32) 01/21/2017   10:40:18  ( -68.39,-161.29)    2.00                41
 01/21/2017   11:30:21   (  68.28,   6.15) 01/21/2017   11:29:45  (  68.27,   6.21)    2.86                36