Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 5 23.  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)
 05/24/2021   10:36:38   ( -69.80,-159.58) 05/24/2021   10:37:46  ( -69.82,-159.51)    3.30                68
 05/24/2021   11:27:22   (  69.68,   7.91) 05/24/2021   11:27:14  (  69.66,   7.91)    2.16                 8
 05/24/2021   12:17:59   ( -69.38, 175.66) 05/24/2021   12:16:46  ( -69.43, 175.24)   17.46                73
 05/27/2021   02:52:59   ( -69.90, -43.79) 05/27/2021   02:54:11  ( -69.87, -43.56)    9.20                72
 05/27/2021   03:43:41   (  69.67, 123.86) 05/27/2021   03:43:39  (  69.70, 123.85)    3.53                 2
 05/27/2021   04:34:22   ( -69.58, -68.69) 05/27/2021   04:33:09  ( -69.59, -68.66)    1.48                73
 05/29/2021   19:09:22   ( -70.15,  71.76) 05/29/2021   19:10:33  ( -70.02,  72.53)   32.84                71
 05/29/2021   20:00:00   (  69.72,-120.27) 05/29/2021   20:00:03  (  69.74,-120.21)    3.49                 3
 05/29/2021   20:50:40   ( -69.57,  47.26) 05/29/2021   20:49:34  ( -69.58,  47.20)    2.12                66
 06/01/2021   11:25:45   ( -70.36,-172.62) 06/01/2021   11:26:55  ( -70.22,-171.30)   52.02                70
 06/01/2021   12:16:19   (  69.72,  -4.33) 06/01/2021   12:16:29  (  69.72,  -4.35)    0.87                10
 06/01/2021   13:07:00   ( -69.62, 163.13) 06/01/2021   13:05:59  ( -69.62, 163.14)    0.95                61
 06/04/2021   03:42:08   ( -70.56, -57.02) 06/04/2021   03:43:16  ( -70.47, -55.05)   73.68                68
 06/04/2021   04:32:39   (  69.77, 111.53) 06/04/2021   04:32:54  (  69.75, 111.57)    3.13                15
 06/04/2021   05:23:19   ( -69.62, -80.93) 06/04/2021   05:22:24  ( -69.65, -80.93)    2.95                55