Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 7.  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)
 11/09/2021   08:48:12   ( -70.77,-132.66) 11/09/2021   08:49:24  ( -70.68,-132.05)   24.16                72
 11/09/2021   09:38:51   (  70.42,  35.21) 11/09/2021   09:38:54  (  70.41,  35.20)    1.31                 3
 11/09/2021   10:29:32   ( -70.30,-157.27) 11/09/2021   10:28:24  ( -70.30,-157.34)    2.51                68
 11/12/2021   01:04:35   ( -71.07, -17.21) 11/12/2021   01:05:45  ( -70.95, -15.76)   54.05                70
 11/12/2021   01:55:09   (  70.47, 151.09) 11/12/2021   01:55:19  (  70.47, 151.15)    2.46                10
 11/12/2021   02:45:50   ( -70.34, -41.38) 11/12/2021   02:44:49  ( -70.35, -41.38)    1.26                61
 11/14/2021   17:20:58   ( -71.36,  98.23) 11/14/2021   17:22:05  ( -71.27, 100.62)   85.71                67
 11/14/2021   18:11:26   (  70.46, -92.94) 11/14/2021   18:11:45  (  70.46, -92.98)    1.68                19
 11/14/2021   19:02:08   ( -70.38,  74.51) 11/14/2021   19:01:14  ( -70.40,  74.57)    3.26                54
 11/17/2021   10:27:43   (  70.49,  22.96) 11/17/2021   10:28:09  (  70.49,  22.95)    0.73                26
 11/17/2021   11:18:25   ( -70.40,-169.58) 11/17/2021   11:17:39  ( -70.38,-169.58)    2.71                46
 11/20/2021   02:44:01   (  70.52, 138.86) 11/20/2021   02:44:34  (  70.51, 138.86)    1.19                33
 11/20/2021   03:34:43   ( -70.43, -53.67) 11/20/2021   03:34:04  ( -70.41, -53.66)    2.40                39