Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 11 23.  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)
 11/24/2017   02:06:13   (  69.30, 145.92) 11/24/2017   02:07:20  (  69.17, 147.93)   80.74                67
 11/24/2017   02:56:39   ( -68.36, -45.48) 11/24/2017   02:57:03  ( -68.33, -45.47)    2.73                24
 11/24/2017   03:47:23   (  68.24, 121.98) 11/24/2017   03:46:30  (  68.22, 122.04)    2.79                53
 11/26/2017   18:22:51   (  68.42, -97.12) 11/26/2017   18:24:02  (  68.42, -97.12)    0.86                71
 11/26/2017   19:13:32   ( -68.28,  70.39) 11/26/2017   19:13:32  ( -68.31,  70.38)    3.35                 0
 11/26/2017   20:04:14   (  68.05,-122.02) 11/26/2017   20:03:01  (  68.09,-122.24)    9.88                73
 11/29/2017   10:39:44   (  68.41,  18.68) 11/29/2017   10:40:30  (  68.39,  18.73)    3.00                46
 11/29/2017   11:30:25   ( -68.26,-173.82) 11/29/2017   11:30:00  ( -68.28,-173.77)    3.32                25
 11/29/2017   12:20:51   (  67.17,  -5.18) 11/29/2017   12:19:44  (  67.21,  -7.35)   93.54                67
 12/02/2017   02:06:11   ( -69.41, -34.22) 12/02/2017   02:07:17  ( -69.30, -31.88)   92.64                66
 12/02/2017   02:56:37   (  68.34, 134.53) 12/02/2017   02:56:59  (  68.35, 134.57)    2.27                22
 12/02/2017   03:47:18   ( -68.19, -57.95) 12/02/2017   03:46:30  ( -68.20, -57.99)    1.67                48
 12/04/2017   18:22:49   ( -68.54,  82.73) 12/04/2017   18:24:00  ( -68.49,  82.98)   11.27                71
 12/04/2017   19:13:30   (  68.27,-109.61) 12/04/2017   19:13:29  (  68.26,-109.65)    2.20                 1
 12/04/2017   20:04:12   ( -68.17,  57.84) 12/04/2017   20:02:59  ( -68.16,  57.86)    1.53                73