Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 9 15.  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)
 09/15/2020   18:22:34   (  68.49, -97.15) 09/15/2020   18:23:45  (  68.49, -97.00)    6.15                71
 09/15/2020   19:13:14   ( -68.29,  70.42) 09/15/2020   19:13:16  ( -68.32,  70.43)    2.76                 2
 09/15/2020   20:03:57   (  68.12,-122.05) 09/15/2020   20:02:44  (  68.15,-122.12)    5.11                73
 09/18/2020   10:39:27   (  68.38,  18.76) 09/18/2020   10:40:14  (  68.40,  18.78)    2.24                47
 09/18/2020   11:30:08   ( -68.24,-173.74) 09/18/2020   11:29:45  ( -68.24,-173.79)    2.13                23
 09/18/2020   12:20:35   (  67.20,  -5.16) 09/18/2020   12:19:28  (  67.23,  -7.30)   92.10                67
 09/21/2020   02:05:55   ( -69.35, -34.10) 09/21/2020   02:07:02  ( -69.26, -31.91)   86.67                67
 09/21/2020   02:56:22   (  68.33, 134.59) 09/21/2020   02:56:44  (  68.31, 134.55)    2.72                22
 09/21/2020   03:47:04   ( -68.24, -57.97) 09/21/2020   03:46:14  ( -68.21, -57.94)    3.04                50
 09/23/2020   18:22:34   ( -68.45,  82.91) 09/23/2020   18:23:45  ( -68.45,  82.95)    1.88                71
 09/23/2020   19:13:17   (  68.28,-109.57) 09/23/2020   19:13:13  (  68.28,-109.61)    1.88                 4
 09/23/2020   20:03:57   ( -68.08,  58.01) 09/23/2020   20:02:44  ( -68.12,  57.83)    8.77                73
 09/26/2020   10:39:29   ( -68.40,-161.26) 09/26/2020   10:40:14  ( -68.41,-161.21)    2.46                45
 09/26/2020   11:30:12   (  68.23,   6.26) 09/26/2020   11:29:42  (  68.23,   6.22)    1.83                30
 09/26/2020   12:20:36   ( -67.16, 174.89) 09/26/2020   12:19:29  ( -67.19, 172.66)   96.32                67