Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 5 10.  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)
 05/10/2017   19:12:52   (  68.32,-109.57) 05/10/2017   19:13:24  (  68.34,-109.56)    2.63                32
 05/10/2017   20:03:33   ( -68.19,  57.92) 05/10/2017   20:02:55  ( -68.17,  57.87)    2.80                38
 05/13/2017   10:39:10   ( -68.80,-161.74) 05/13/2017   10:40:21  ( -68.73,-160.85)   36.49                71
 05/13/2017   11:29:47   (  68.29,   6.23) 05/13/2017   11:29:54  (  68.29,   6.26)    1.16                 7
 05/13/2017   12:20:28   ( -68.16, 173.72) 05/13/2017   12:19:24  ( -68.18, 173.75)    2.32                64
 05/16/2017   02:55:58   ( -68.40, -45.44) 05/16/2017   02:56:56  ( -68.39, -45.38)    2.38                58
 05/16/2017   03:46:41   (  68.22, 122.10) 05/16/2017   03:46:24  (  68.23, 122.06)    1.95                17
 05/16/2017   04:37:13   ( -67.60, -69.81) 05/16/2017   04:36:02  ( -67.67, -70.95)   48.96                71
 05/18/2017   19:12:51   ( -68.32,  70.43) 05/18/2017   19:13:25  ( -68.33,  70.42)    0.80                34
 05/18/2017   20:03:35   (  68.20,-122.10) 05/18/2017   20:02:52  (  68.22,-122.07)    2.46                43
 05/21/2017   10:39:10   (  68.71,  18.37) 05/21/2017   10:40:21  (  68.58,  18.97)   28.28                71
 05/21/2017   11:29:46   ( -68.30,-173.77) 05/21/2017   11:29:54  ( -68.31,-173.72)    2.40                 8
 05/21/2017   12:20:29   (  68.12,  -6.24) 05/21/2017   12:19:22  (  68.14,  -6.28)    2.37                67
 05/24/2017   02:55:59   (  68.37, 134.59) 05/24/2017   02:56:53  (  68.38, 134.62)    1.84                54
 05/24/2017   03:46:40   ( -68.23, -57.91) 05/24/2017   03:46:24  ( -68.23, -57.94)    1.07                16
 05/24/2017   04:37:11   (  67.40, 110.42) 05/24/2017   04:36:02  (  67.49, 108.86)   67.22                69