Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 10 30.  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)
 11/01/2021   07:59:16   ( -70.44,-119.99) 11/01/2021   08:00:10  ( -70.45,-120.01)    1.45                54
 11/01/2021   08:50:00   (  70.36,  47.46) 11/01/2021   08:49:37  (  70.35,  47.48)    0.92                23
 11/01/2021   09:40:27   ( -69.50,-143.92) 11/01/2021   09:39:19  ( -69.58,-145.96)   79.95                68
 11/04/2021   00:15:34   ( -70.49,  -4.11) 11/04/2021   00:16:36  ( -70.49,  -4.09)    1.06                62
 11/04/2021   01:06:17   (  70.36, 163.41) 11/04/2021   01:06:03  (  70.38, 163.40)    2.46                14
 11/04/2021   01:56:50   ( -69.82, -28.43) 11/04/2021   01:55:40  ( -69.88, -29.67)   48.21                70
 11/06/2021   16:31:50   ( -70.49, 111.84) 11/06/2021   16:33:01  ( -70.51, 111.82)    1.99                71
 11/06/2021   17:22:34   (  70.42, -80.73) 11/06/2021   17:22:28  (  70.40, -80.70)    2.40                 6
 11/06/2021   18:13:12   ( -70.13,  87.04) 11/06/2021   18:12:00  ( -70.18,  86.62)   16.94                72
 11/09/2021   08:48:12   ( -70.75,-132.63) 11/09/2021   08:49:24  ( -70.68,-132.05)   23.03                72
 11/09/2021   09:38:51   (  70.43,  35.21) 11/09/2021   09:38:54  (  70.40,  35.19)    2.56                 3
 11/09/2021   10:29:32   ( -70.29,-157.25) 11/09/2021   10:28:24  ( -70.30,-157.33)    3.17                68
 11/12/2021   01:04:35   ( -71.07, -17.22) 11/12/2021   01:05:44  ( -71.00, -15.68)   56.17                69
 11/12/2021   01:55:08   (  70.44, 151.15) 11/12/2021   01:55:19  (  70.45, 151.14)    1.87                11
 11/12/2021   02:45:50   ( -70.35, -41.39) 11/12/2021   02:44:49  ( -70.35, -41.38)    0.41                61