Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 3 2.  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   (  70.26, 179.69) 03/04/2021   23:55:58  (  70.17,-178.29)   76.82                68
 03/05/2021   00:45:17   ( -69.39, -11.69) 03/05/2021   00:45:40  ( -69.39, -11.72)    1.31                23
 03/05/2021   01:36:01   (  69.31, 155.74) 03/05/2021   01:35:07  (  69.29, 155.78)    3.14                54
 03/07/2021   17:01:38   ( -69.42, 104.20) 03/07/2021   17:02:07  ( -69.42, 104.19)    0.72                29
 03/07/2021   17:52:21   (  69.29, -88.31) 03/07/2021   17:51:34  (  69.31, -88.31)    1.39                47
 03/10/2021   09:17:59   ( -69.46,-139.92) 03/10/2021   09:18:34  ( -69.44,-139.91)    2.18                35
 03/10/2021   10:08:42   (  69.33,  27.57) 03/10/2021   10:08:01  (  69.32,  27.59)    1.40                41
 03/13/2021   01:34:18   ( -69.44, -23.96) 03/13/2021   01:35:00  ( -69.45, -24.01)    2.35                42
 03/13/2021   02:25:01   (  69.32, 143.52) 03/13/2021   02:24:27  (  69.33, 143.48)    2.02                34
 03/15/2021   17:50:39   ( -69.48,  91.92) 03/15/2021   17:51:27  ( -69.46,  91.88)    2.20                48
 03/15/2021   18:41:22   (  69.36,-100.61) 03/15/2021   18:40:54  (  69.34,-100.63)    2.81                28