Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 12 20.  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)
 12/20/2021   21:53:02   ( -69.12,  29.58) 12/20/2021   21:53:46  ( -69.14,  29.57)    2.00                44
 12/20/2021   22:43:46   (  68.99,-162.94) 12/20/2021   22:43:14  (  68.97,-162.99)    2.79                32
 12/23/2021   13:19:24   (  69.84, -22.99) 12/23/2021   13:20:33  (  69.71, -21.42)   62.02                69
 12/23/2021   14:09:54   ( -69.12, 145.35) 12/23/2021   14:10:12  ( -69.10, 145.40)    3.15                18
 12/23/2021   15:00:38   (  69.00, -47.17) 12/23/2021   14:59:39  (  68.99, -47.09)    2.94                59
 12/26/2021   05:36:02   (  69.16,  93.77) 12/26/2021   05:37:07  (  69.16,  93.73)    1.60                65
 12/26/2021   06:26:44   ( -69.08, -98.80) 12/26/2021   06:26:37  ( -69.05, -98.78)    2.92                 7
 12/26/2021   07:17:21   (  68.58,  69.18) 12/26/2021   07:16:10  (  68.60,  68.30)   35.53                71
 12/28/2021   21:52:54   (  69.17,-150.47) 12/28/2021   21:53:32  (  69.15,-150.40)    3.58                38
 12/28/2021   22:43:35   ( -69.03,  17.04) 12/28/2021   22:43:02  ( -69.05,  17.10)    2.76                33
 12/31/2021   13:19:12   ( -69.84, 157.05) 12/31/2021   13:20:21  ( -69.75, 158.63)   61.52                69
 12/31/2021   14:09:44   (  69.08, -34.57) 12/31/2021   14:09:58  (  69.08, -34.62)    1.96                14
 12/31/2021   15:00:26   ( -69.00, 132.87) 12/31/2021   14:59:28  ( -68.98, 132.89)    2.49                58