Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 27.  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)
 07/29/2017   19:12:55   (  68.37,-109.59) 07/29/2017   19:13:39  (  68.39,-109.58)    2.09                44
 07/29/2017   20:03:36   ( -68.22,  57.92) 07/29/2017   20:03:10  ( -68.23,  57.86)    2.55                26
 08/01/2017   10:39:22   ( -69.25,-162.32) 08/01/2017   10:40:30  ( -69.13,-160.42)   76.22                68
 08/01/2017   11:29:51   (  68.33,   6.22) 08/01/2017   11:30:09  (  68.35,   6.25)    2.00                18
 08/01/2017   12:20:32   ( -68.18, 173.73) 08/01/2017   12:19:40  ( -68.19, 173.69)    1.97                52
 08/04/2017   02:56:04   ( -68.41, -45.43) 08/04/2017   02:57:13  ( -68.43, -45.43)    1.55                69
 08/04/2017   03:46:48   (  68.30, 122.03) 08/04/2017   03:46:40  (  68.31, 122.07)    2.05                 8
 08/04/2017   04:37:26   ( -67.99, -70.26) 08/04/2017   04:36:13  ( -68.04, -70.61)   16.01                73
 08/06/2017   19:13:01   ( -68.38,  70.38) 08/06/2017   19:13:44  ( -68.39,  70.39)    0.75                43
 08/06/2017   20:03:45   (  68.27,-122.17) 08/06/2017   20:03:11  (  68.27,-122.11)    2.86                34
 08/09/2017   10:39:27   (  69.05,  17.93) 08/09/2017   10:40:36  (  68.94,  19.32)   56.56                69
 08/09/2017   11:29:58   ( -68.35,-173.82) 08/09/2017   11:30:15  ( -68.34,-173.79)    1.63                17
 08/09/2017   12:20:41   (  68.19,  -6.31) 08/09/2017   12:19:42  (  68.22,  -6.29)    3.11                59