Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 12 27.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2019   10:39:24   ( -68.81,-160.79) 12/29/2019   10:39:53  ( -68.80,-160.75)    1.61                29
 12/29/2019   11:30:07   (  68.63,   6.75) 12/29/2019   11:29:21  (  68.64,   6.70)    2.45                46
 01/01/2020   02:55:48   ( -68.80, -44.88) 01/01/2020   02:56:21  ( -68.79, -44.88)    1.00                33
 01/01/2020   03:46:32   (  68.68, 122.59) 01/01/2020   03:45:48  (  68.69, 122.63)    1.94                44
 01/03/2020   19:12:13   ( -68.80,  71.03) 01/03/2020   19:12:50  ( -68.78,  70.98)    2.81                37
 01/03/2020   20:02:57   (  68.68,-121.51) 01/03/2020   20:02:17  (  68.67,-121.51)    0.87                40
 01/06/2020   11:28:38   ( -68.79,-173.07) 01/06/2020   11:29:18  ( -68.81,-173.09)    2.16                40
 01/06/2020   12:19:22   (  68.67,  -5.61) 01/06/2020   12:18:45  (  68.70,  -5.58)    3.15                37
 01/09/2020   03:45:03   ( -68.79, -57.17) 01/09/2020   03:45:47  ( -68.79, -57.24)    2.74                44
 01/09/2020   04:35:47   (  68.67, 110.29) 01/09/2020   04:35:14  (  68.67, 110.26)    1.16                33