Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 26.  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)
 12/26/2019   18:22:13   ( -68.98,  82.26) 12/26/2019   18:23:23  ( -68.87,  83.46)   49.60                70
 12/26/2019   19:12:47   (  68.32,-109.56) 12/26/2019   19:12:58  (  68.32,-109.57)    0.36                11
 12/26/2019   20:03:28   ( -68.19,  57.93) 12/26/2019   20:02:28  ( -68.21,  57.92)    2.13                60
 12/29/2019   10:38:56   ( -68.43,-161.23) 12/29/2019   10:40:00  ( -68.42,-161.22)    1.37                64
 12/29/2019   11:29:40   (  68.31,   6.23) 12/29/2019   11:29:27  (  68.31,   6.30)    2.81                13
 12/29/2019   12:20:15   ( -67.85, 174.13) 12/29/2019   12:19:03  ( -67.87, 173.40)   30.63                72
 01/01/2020   02:55:47   ( -68.36, -45.37) 01/01/2020   02:56:29  ( -68.35, -45.42)    2.44                42
 01/01/2020   03:46:31   (  68.25, 122.09) 01/01/2020   03:45:56  (  68.24, 122.10)    0.28                35
 01/03/2020   18:22:10   (  69.09, -97.88) 01/03/2020   18:23:19  (  68.95, -96.43)   59.54                69
 01/03/2020   19:12:40   ( -68.35,  70.43) 01/03/2020   19:12:58  ( -68.34,  70.44)    1.41                18
 01/03/2020   20:03:23   (  68.18,-122.05) 01/03/2020   20:02:26  (  68.17,-122.11)    2.74                57
 01/06/2020   10:38:51   (  68.44,  18.77) 01/06/2020   10:39:57  (  68.42,  18.80)    1.70                66
 01/06/2020   11:29:32   ( -68.28,-173.71) 01/06/2020   11:29:28  ( -68.26,-173.77)    3.24                 4
 01/06/2020   12:20:11   (  67.91,  -5.93) 01/06/2020   12:18:59  (  67.92,  -6.52)   24.75                72
 01/09/2020   02:55:43   (  68.38, 134.63) 01/09/2020   02:56:26  (  68.40, 134.65)    2.42                43