Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 6 22.  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)
 06/25/2017   02:55:57   (  68.41, 134.57) 06/25/2017   02:56:55  (  68.39, 134.61)    2.66                58
 06/25/2017   03:46:37   ( -68.23, -57.88) 06/25/2017   03:46:26  ( -68.24, -57.94)    2.68                11
 06/25/2017   04:37:12   (  67.61, 110.21) 06/25/2017   04:36:02  (  67.61, 108.98)   52.19                70
 06/27/2017   19:12:50   (  68.37,-109.60) 06/27/2017   19:13:23  (  68.35,-109.56)    2.89                33
 06/27/2017   20:03:30   ( -68.19,  57.95) 06/27/2017   20:02:54  ( -68.20,  57.90)    2.56                36
 06/30/2017   10:39:08   ( -68.89,-161.82) 06/30/2017   10:40:18  ( -68.81,-160.75)   43.89                70
 06/30/2017   11:29:43   (  68.28,   6.29) 06/30/2017   11:29:52  (  68.30,   6.26)    2.32                 9
 06/30/2017   12:20:24   ( -68.15, 173.78) 06/30/2017   12:19:23  ( -68.15, 173.72)    2.56                61
 07/03/2017   02:55:54   ( -68.42, -45.43) 07/03/2017   02:56:53  ( -68.41, -45.36)    2.95                59
 07/03/2017   03:46:37   (  68.24, 122.11) 07/03/2017   03:46:21  (  68.23, 122.07)    2.34                16
 07/03/2017   04:37:10   ( -67.68, -69.86) 07/03/2017   04:35:59  ( -67.69, -70.93)   45.12                71
 07/05/2017   19:12:47   ( -68.33,  70.47) 07/05/2017   19:13:22  ( -68.33,  70.43)    1.60                35
 07/05/2017   20:03:31   (  68.21,-122.07) 07/05/2017   20:02:49  (  68.21,-122.08)    0.64                42