Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 10 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)
 10/26/2021   23:26:41   ( -70.40,   8.18) 10/26/2021   23:27:18  ( -70.40,   8.16)    0.95                37
 10/27/2021   00:17:25   (  70.31, 175.64) 10/27/2021   00:16:45  (  70.30, 175.65)    1.21                40
 10/29/2021   15:42:59   ( -70.44, 124.06) 10/29/2021   15:43:42  ( -70.43, 124.09)    1.53                43
 10/29/2021   16:33:42   (  70.30, -68.40) 10/29/2021   16:33:09  (  70.33, -68.42)    3.15                33
 11/01/2021   07:59:16   ( -70.43,-119.97) 11/01/2021   08:00:06  ( -70.46,-119.98)    3.14                50
 11/01/2021   08:50:00   (  70.35,  47.47) 11/01/2021   08:49:33  (  70.35,  47.50)    1.13                27
 11/01/2021   09:40:24   ( -69.33,-143.67) 11/01/2021   09:39:18  ( -69.42,-146.16)   97.88                66
 11/04/2021   00:15:34   ( -70.48,  -4.09) 11/04/2021   00:16:30  ( -70.48,  -4.07)    0.94                56
 11/04/2021   01:06:16   (  70.35, 163.43) 11/04/2021   01:05:56  (  70.37, 163.41)    2.27                20
 11/04/2021   01:56:45   ( -69.59, -28.10) 11/04/2021   01:55:37  ( -69.66, -29.95)   72.34                68
 11/06/2021   16:31:50   ( -70.48, 111.87) 11/06/2021   16:32:53  ( -70.49, 111.84)    2.42                63
 11/06/2021   17:22:34   (  70.41, -80.71) 11/06/2021   17:22:20  (  70.38, -80.69)    2.95                14
 11/06/2021   18:13:07   ( -69.85,  87.47) 11/06/2021   18:11:56  ( -69.94,  86.33)   44.95                71