Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 11 18.  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)
 11/18/2017   18:22:52   ( -68.47,  82.83) 11/18/2017   18:24:03  ( -68.48,  82.94)    4.74                71
 11/18/2017   19:13:35   (  68.29,-109.63) 11/18/2017   19:13:31  (  68.32,-109.62)    2.58                 4
 11/18/2017   20:04:15   ( -68.10,  57.93) 11/18/2017   20:03:03  ( -68.10,  57.76)    7.17                72
 11/21/2017   10:39:45   ( -68.39,-161.29) 11/21/2017   10:40:33  ( -68.39,-161.28)    0.60                48
 11/21/2017   11:30:29   (  68.27,   6.17) 11/21/2017   11:30:00  (  68.28,   6.22)    2.31                29
 11/21/2017   12:20:53   ( -67.21, 174.78) 11/21/2017   12:19:46  ( -67.28, 172.71)   89.54                67
 11/24/2017   02:06:12   (  69.26, 145.99) 11/24/2017   02:07:19  (  69.17, 147.94)   77.62                67
 11/24/2017   02:56:39   ( -68.36, -45.49) 11/24/2017   02:57:02  ( -68.34, -45.46)    2.35                23
 11/24/2017   03:47:22   (  68.19, 122.04) 11/24/2017   03:46:30  (  68.17, 121.98)    3.60                52
 11/26/2017   18:22:51   (  68.43, -97.12) 11/26/2017   18:24:00  (  68.43, -97.10)    1.17                69
 11/26/2017   19:13:32   ( -68.28,  70.39) 11/26/2017   19:13:31  ( -68.27,  70.35)    1.75                 1
 11/26/2017   20:04:13   (  68.01,-121.96) 11/26/2017   20:03:00  (  68.04,-122.28)   14.04                73
 11/29/2017   10:39:43   (  68.36,  18.74) 11/29/2017   10:40:28  (  68.35,  18.69)    2.36                45
 11/29/2017   11:30:25   ( -68.26,-173.82) 11/29/2017   11:29:58  ( -68.25,-173.79)    1.65                27