Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 8 22.  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)
 08/23/2021   14:23:31   (  70.45, -36.60) 08/23/2021   14:24:42  (  70.34, -35.94)   28.19                71
 08/23/2021   15:14:07   ( -70.06, 131.34) 08/23/2021   15:14:15  ( -70.05, 131.29)    1.97                 8
 08/23/2021   16:04:50   (  69.93, -61.16) 08/23/2021   16:03:42  (  69.95, -61.21)    2.77                68
 08/26/2021   06:39:54   (  70.71,  78.93) 08/26/2021   06:41:03  (  70.60,  80.34)   53.02                69
 08/26/2021   07:30:26   ( -70.10,-112.78) 08/26/2021   07:30:40  ( -70.10,-112.75)    1.22                14
 08/26/2021   08:21:09   (  69.97,  54.73) 08/26/2021   08:20:07  (  70.00,  54.74)    2.90                62
 08/28/2021   22:56:17   (  70.96,-165.54) 08/28/2021   22:57:24  (  70.87,-163.38)   79.18                67
 08/28/2021   23:46:43   ( -70.09,   3.17) 08/28/2021   23:47:05  ( -70.10,   3.12)    2.15                22
 08/29/2021   00:37:27   (  70.02, 170.60) 08/29/2021   00:36:32  (  69.99, 170.61)    3.24                55
 08/31/2021   16:03:02   ( -70.14, 119.05) 08/31/2021   16:03:30  ( -70.14, 119.06)    0.35                28
 08/31/2021   16:53:45   (  70.01, -73.44) 08/31/2021   16:52:57  (  70.03, -73.46)    2.11                48
 09/03/2021   08:19:21   ( -70.18,-125.08) 09/03/2021   08:19:55  ( -70.17,-125.01)    2.86                34
 09/03/2021   09:10:04   (  70.05,  42.44) 09/03/2021   09:09:22  (  70.06,  42.47)    1.51                42