Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 3.  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)
 11/04/2021   00:15:34   ( -70.50,  -4.13) 11/04/2021   00:16:36  ( -70.48,  -4.10)    3.16                62
 11/04/2021   01:06:17   (  70.37, 163.40) 11/04/2021   01:06:03  (  70.38, 163.39)    1.13                14
 11/04/2021   01:56:50   ( -69.83, -28.45) 11/04/2021   01:55:40  ( -69.88, -29.68)   47.69                70
 11/06/2021   16:31:51   ( -70.50, 111.82) 11/06/2021   16:33:02  ( -70.49, 111.80)    1.19                71
 11/06/2021   17:22:33   (  70.37, -80.66) 11/06/2021   17:22:28  (  70.39, -80.71)    2.94                 5
 11/06/2021   18:13:12   ( -70.14,  87.03) 11/06/2021   18:11:59  ( -70.22,  86.68)   15.87                73
 11/09/2021   08:48:12   ( -70.76,-132.65) 11/09/2021   08:49:24  ( -70.66,-132.07)   23.95                72
 11/09/2021   09:38:51   (  70.43,  35.20) 11/09/2021   09:38:53  (  70.45,  35.25)    2.54                 2
 11/09/2021   10:29:33   ( -70.35,-157.35) 11/09/2021   10:28:23  ( -70.33,-157.28)    3.24                70
 11/12/2021   01:04:35   ( -71.08, -17.23) 11/12/2021   01:05:44  ( -70.98, -15.71)   56.00                69
 11/12/2021   01:55:08   (  70.44, 151.14) 11/12/2021   01:55:19  (  70.43, 151.11)    1.30                11
 11/12/2021   02:45:50   ( -70.35, -41.40) 11/12/2021   02:44:49  ( -70.32, -41.41)    3.33                61
 11/14/2021   17:20:58   ( -71.40,  98.17) 11/14/2021   17:22:04  ( -71.28, 100.64)   89.04                66
 11/14/2021   18:11:25   (  70.46, -92.93) 11/14/2021   18:11:44  (  70.46, -92.97)    1.65                19
 11/14/2021   19:02:07   ( -70.36,  74.54) 11/14/2021   19:01:14  ( -70.36,  74.51)    1.24                53