Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 12 24.  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)
 12/26/2020   02:55:44   (  68.39, 134.60) 12/26/2020   02:56:21  (  68.41, 134.62)    2.34                37
 12/26/2020   03:46:25   ( -68.25, -57.91) 12/26/2020   03:45:52  ( -68.24, -57.95)    2.00                33
 12/28/2020   18:22:05   ( -69.01,  82.23) 12/28/2020   18:23:15  ( -68.93,  83.50)   51.41                70
 12/28/2020   19:12:39   (  68.35,-109.59) 12/28/2020   19:12:51  (  68.32,-109.61)    3.06                12
 12/28/2020   20:03:20   ( -68.21,  57.91) 12/28/2020   20:02:21  ( -68.21,  57.90)    0.89                59
 12/31/2020   10:38:50   ( -68.43,-161.24) 12/31/2020   10:39:52  ( -68.46,-161.21)    3.14                62
 12/31/2020   11:29:33   (  68.31,   6.23) 12/31/2020   11:29:19  (  68.29,   6.23)    2.85                14
 12/31/2020   12:20:07   ( -67.79, 174.20) 12/31/2020   12:18:55  ( -67.85, 173.35)   36.19                72
 01/03/2021   02:55:44   ( -68.40, -45.42) 01/03/2021   02:56:21  ( -68.37, -45.44)    3.43                37
 01/03/2021   03:46:27   (  68.23, 122.10) 01/03/2021   03:45:48  (  68.25, 122.06)    2.86                39
 01/05/2021   18:22:04   (  68.84, -97.56) 01/05/2021   18:23:15  (  68.70, -96.79)   34.59                71
 01/05/2021   19:12:39   ( -68.36,  70.39) 01/05/2021   19:12:49  ( -68.38,  70.45)    3.20                10
 01/05/2021   20:03:22   (  68.20,-122.09) 01/05/2021   20:02:17  (  68.20,-122.12)    0.97                65