Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2015 6 20.  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)
 06/22/2015   15:55:05   (  69.70, -60.70) 06/22/2015   15:56:13  (  69.59, -58.74)   76.81                68
 06/22/2015   16:45:32   ( -68.82, 107.86) 06/22/2015   16:45:55  ( -68.81, 107.88)    1.11                23
 06/22/2015   17:36:16   (  68.70, -84.66) 06/22/2015   17:35:22  (  68.71, -84.60)    3.30                54
 06/25/2015   08:11:46   (  69.02,  56.04) 06/25/2015   08:12:57  (  68.96,  56.30)   12.52                71
 06/25/2015   09:02:25   ( -68.77,-136.31) 06/25/2015   09:02:28  ( -68.80,-136.27)    3.27                 3
 06/25/2015   09:53:09   (  68.66,  31.16) 06/25/2015   09:51:56  (  68.64,  31.18)    1.82                73
 06/28/2015   00:28:36   (  68.88, 172.00) 06/28/2015   00:29:31  (  68.85, 172.03)    3.00                55
 06/28/2015   01:19:17   ( -68.73, -20.49) 06/28/2015   01:19:01  ( -68.75, -20.47)    2.08                16
 06/28/2015   02:09:48   (  67.92, 147.87) 06/28/2015   02:08:40  (  67.97, 146.24)   68.52                68
 06/30/2015   16:45:29   (  68.85, -72.19) 06/30/2015   16:46:05  (  68.82, -72.16)    3.32                36
 06/30/2015   17:36:10   ( -68.69,  95.33) 06/30/2015   17:35:35  ( -68.72,  95.35)    2.86                35
 07/03/2015   08:11:52   ( -69.66,-124.87) 07/03/2015   08:13:00  ( -69.58,-122.95)   75.13                68
 07/03/2015   09:02:22   (  68.82,  43.62) 07/03/2015   09:02:39  (  68.80,  43.68)    2.95                17
 07/03/2015   09:53:03   ( -68.66,-148.85) 07/03/2015   09:52:10  ( -68.65,-148.87)    1.28                53