Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 3 4.  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)
 03/04/2021   23:54:50   (  70.27, 179.68) 03/04/2021   23:55:58  (  70.16,-178.30)   77.07                68
 03/05/2021   00:45:17   ( -69.40, -11.70) 03/05/2021   00:45:40  ( -69.39, -11.73)    1.88                23
 03/05/2021   01:36:00   (  69.26, 155.81) 03/05/2021   01:35:07  (  69.28, 155.77)    2.47                53
 03/07/2021   17:01:38   ( -69.43, 104.19) 03/07/2021   17:02:07  ( -69.41, 104.18)    2.23                29
 03/07/2021   17:52:21   (  69.30, -88.31) 03/07/2021   17:51:34  (  69.30, -88.32)    0.25                47
 03/10/2021   09:17:58   ( -69.41,-139.85) 03/10/2021   09:18:34  ( -69.43,-139.91)    3.14                36
 03/10/2021   10:08:42   (  69.34,  27.56) 03/10/2021   10:08:01  (  69.32,  27.58)    2.67                41
 03/13/2021   01:34:19   ( -69.45, -23.97) 03/13/2021   01:35:01  ( -69.45, -24.02)    1.72                42
 03/13/2021   02:25:02   (  69.33, 143.51) 03/13/2021   02:24:28  (  69.33, 143.47)    1.37                34
 03/15/2021   17:50:39   ( -69.49,  91.90) 03/15/2021   17:51:26  ( -69.51,  91.95)    3.06                47
 03/15/2021   18:41:22   (  69.37,-100.62) 03/15/2021   18:40:53  (  69.39,-100.57)    2.88                29