Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 3 21.  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)
 03/21/2020   03:46:34   (  68.29, 121.97) 03/21/2020   03:46:44  (  68.27, 121.96)    1.54                10
 03/21/2020   04:37:15   ( -68.16, -70.55) 03/21/2020   04:36:14  ( -68.17, -70.53)    1.20                61
 03/23/2020   19:12:45   ( -68.39,  70.30) 03/23/2020   19:13:45  ( -68.38,  70.34)    1.30                60
 03/23/2020   20:03:29   (  68.25,-122.22) 03/23/2020   20:03:12  (  68.26,-122.16)    2.54                17
 03/23/2020   20:54:01   ( -67.64,  45.87) 03/23/2020   20:52:50  ( -67.72,  44.83)   44.66                71
 03/26/2020   11:29:39   ( -68.30,-173.81) 03/26/2020   11:30:14  ( -68.32,-173.86)    2.97                35
 03/26/2020   12:20:23   (  68.16,  -6.34) 03/26/2020   12:19:41  (  68.19,  -6.36)    3.33                42
 03/29/2020   02:55:58   (  68.67, 134.15) 03/29/2020   02:57:09  (  68.57, 134.70)   24.94                71
 03/29/2020   03:46:34   ( -68.26, -58.00) 03/29/2020   03:46:43  ( -68.25, -58.05)    2.67                 9
 03/29/2020   04:37:18   (  68.13, 109.47) 03/29/2020   04:36:10  (  68.12, 109.45)    1.80                68
 03/31/2020   19:12:47   (  68.37,-109.69) 03/31/2020   19:13:39  (  68.38,-109.64)    2.25                52
 03/31/2020   20:03:28   ( -68.23,  57.81) 03/31/2020   20:03:10  ( -68.23,  57.82)    0.26                18
 03/31/2020   20:53:58   (  67.35,-133.80) 03/31/2020   20:52:50  (  67.37,-135.52)   73.97                68
 04/03/2020   11:29:41   (  68.29,   6.19) 04/03/2020   11:30:08  (  68.30,   6.16)    1.63                27
 04/03/2020   12:20:23   ( -68.20, 173.62) 04/03/2020   12:19:38  ( -68.21, 173.68)    2.82                45