Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 8 26.  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)
 08/26/2021   06:39:54   (  70.71,  78.93) 08/26/2021   06:41:03  (  70.60,  80.34)   53.12                69
 08/26/2021   07:30:26   ( -70.11,-112.79) 08/26/2021   07:30:40  ( -70.10,-112.76)    1.43                14
 08/26/2021   08:21:09   (  69.98,  54.72) 08/26/2021   08:20:07  (  70.00,  54.74)    2.85                62
 08/28/2021   22:56:17   (  70.96,-165.54) 08/28/2021   22:57:24  (  70.87,-163.38)   79.19                67
 08/28/2021   23:46:44   ( -70.10,   3.17) 08/28/2021   23:47:06  ( -70.09,   3.11)    2.19                22
 08/29/2021   00:37:28   (  70.02, 170.60) 08/29/2021   00:36:33  (  69.99, 170.61)    3.08                55
 08/31/2021   16:03:02   ( -70.14, 119.05) 08/31/2021   16:03:30  ( -70.14, 119.05)    0.35                28
 08/31/2021   16:53:45   (  70.01, -73.43) 08/31/2021   16:52:57  (  70.03, -73.45)    2.54                48
 09/03/2021   08:19:21   ( -70.18,-125.07) 09/03/2021   08:19:55  ( -70.17,-125.01)    2.58                34
 09/03/2021   09:10:04   (  70.05,  42.44) 09/03/2021   09:09:22  (  70.06,  42.47)    1.79                42
 09/06/2021   00:35:39   ( -70.17,  -9.12) 09/06/2021   00:36:21  ( -70.15,  -9.16)    3.21                42
 09/06/2021   01:26:23   (  70.09, 158.32) 09/06/2021   01:25:47  (  70.09, 158.40)    2.83                36
 09/08/2021   16:51:58   ( -70.22, 106.76) 09/08/2021   16:52:45  ( -70.23, 106.84)    3.14                47
 09/08/2021   17:42:40   (  70.08, -85.72) 09/08/2021   17:42:11  (  70.11, -85.69)    3.37                29