Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 10 18.  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)
 10/20/2017   10:39:51   ( -68.43,-161.30) 10/20/2017   10:40:34  ( -68.45,-161.31)    2.86                43
 10/20/2017   11:30:35   (  68.29,   6.19) 10/20/2017   11:30:02  (  68.28,   6.13)    2.59                33
 10/23/2017   02:06:14   (  69.08, 146.27) 10/23/2017   02:07:23  (  68.95, 147.56)   53.44                69
 10/23/2017   02:56:45   ( -68.42, -45.52) 10/23/2017   02:57:01  ( -68.40, -45.48)    2.18                16
 10/23/2017   03:47:29   (  68.28, 121.96) 10/23/2017   03:46:28  (  68.28, 122.02)    2.31                61
 10/25/2017   18:22:58   (  68.49, -97.16) 10/25/2017   18:23:58  (  68.50, -97.11)    2.42                60
 10/25/2017   19:13:39   ( -68.36,  70.33) 10/25/2017   19:13:29  ( -68.35,  70.33)    1.34                10
 10/25/2017   20:04:14   (  67.74,-121.59) 10/25/2017   20:03:04  (  67.78,-122.69)   46.44                70
 10/28/2017   10:39:52   (  68.44,  18.67) 10/28/2017   10:40:26  (  68.43,  18.69)    0.80                34
 10/28/2017   11:30:33   ( -68.30,-173.83) 10/28/2017   11:29:57  ( -68.28,-173.86)    2.35                36
 10/31/2017   02:06:10   ( -68.93, -33.53) 10/31/2017   02:07:21  ( -68.82, -32.59)   39.70                71
 10/31/2017   02:56:46   (  68.38, 134.51) 10/31/2017   02:56:54  (  68.36, 134.49)    2.86                 8
 10/31/2017   03:47:27   ( -68.25, -58.00) 10/31/2017   03:46:24  ( -68.27, -57.99)    2.25                63