Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 6 26.  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)
 06/28/2015   00:28:36   (  68.87, 172.01) 06/28/2015   00:29:27  (  68.87, 172.07)    2.30                51
 06/28/2015   01:19:17   ( -68.73, -20.49) 06/28/2015   01:18:57  ( -68.76, -20.44)    3.17                20
 06/28/2015   02:09:46   (  67.80, 148.01) 06/28/2015   02:08:38  (  67.87, 146.14)   78.98                68
 06/30/2015   16:45:28   (  68.79, -72.11) 06/30/2015   16:45:59  (  68.79, -72.16)    2.12                31
 06/30/2015   17:36:10   ( -68.70,  95.33) 06/30/2015   17:35:29  ( -68.68,  95.34)    1.57                41
 07/03/2015   08:11:46   ( -69.35,-124.42) 07/03/2015   08:12:56  ( -69.25,-123.35)   43.78                70
 07/03/2015   09:02:21   (  68.76,  43.70) 07/03/2015   09:02:30  (  68.74,  43.66)    2.36                 9
 07/03/2015   09:53:03   ( -68.66,-148.86) 07/03/2015   09:52:00  ( -68.64,-148.83)    2.50                63
 07/06/2015   00:28:29   ( -68.84,  -7.95) 07/06/2015   00:29:32  ( -68.85,  -7.98)    1.72                63
 07/06/2015   01:19:13   (  68.73, 159.50) 07/06/2015   01:18:59  (  68.73, 159.52)    0.76                14
 07/06/2015   02:09:47   ( -68.21, -32.49) 07/06/2015   02:08:36  ( -68.25, -33.44)   39.43                71
 07/08/2015   16:45:22   ( -68.81, 107.86) 07/08/2015   16:46:02  ( -68.82, 107.86)    0.95                40
 07/08/2015   17:36:06   (  68.71, -84.70) 07/08/2015   17:35:29  (  68.70, -84.64)    2.70                37