Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 2 17.  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)
 02/18/2020   02:55:58   ( -69.28, -46.62) 02/18/2020   02:57:06  ( -69.13, -44.71)   77.27                68
 02/18/2020   03:46:27   (  68.35, 121.94) 02/18/2020   03:46:45  (  68.35, 121.97)    1.05                18
 02/18/2020   04:37:08   ( -68.21, -70.57) 02/18/2020   04:36:16  ( -68.19, -70.59)    2.40                52
 02/20/2020   19:12:39   ( -68.47,  70.24) 02/20/2020   19:13:50  ( -68.48,  70.34)    4.00                71
 02/20/2020   20:03:22   (  68.29,-122.21) 02/20/2020   20:03:18  (  68.30,-122.22)    2.09                 4
 02/20/2020   20:54:02   ( -68.10,  45.35) 02/20/2020   20:52:50  ( -68.10,  45.16)    7.68                72
 02/23/2020   11:29:34   ( -68.41,-173.91) 02/23/2020   11:30:23  ( -68.43,-173.85)    3.47                49
 02/23/2020   12:20:18   (  68.28,  -6.44) 02/23/2020   12:19:51  (  68.25,  -6.42)    3.20                27
 02/23/2020   13:10:43   ( -67.28, 162.11) 02/23/2020   13:09:35  ( -67.38, 160.21)   82.09                68
 02/26/2020   02:56:04   (  69.40, 133.18) 02/26/2020   02:57:10  (  69.30, 135.48)   90.83                66
 02/26/2020   03:46:28   ( -68.35, -58.07) 02/26/2020   03:46:55  ( -68.38, -58.05)    3.20                27
 02/26/2020   04:37:12   (  68.23, 109.40) 02/26/2020   04:36:23  (  68.20, 109.38)    3.09                49
 02/28/2020   19:12:45   (  68.60,-109.95) 02/28/2020   19:13:56  (  68.52,-109.64)   15.08                71
 02/28/2020   20:03:23   ( -68.29,  57.77) 02/28/2020   20:03:28  ( -68.32,  57.74)    2.95                 5
 02/28/2020   20:54:07   (  68.17,-134.77) 02/28/2020   20:52:55  (  68.19,-134.76)    2.39                72