Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 10 27.  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)
 10/29/2021   15:42:59   ( -70.42, 124.10) 10/29/2021   15:43:43  ( -70.40, 124.04)    3.09                44
 10/29/2021   16:33:43   (  70.33, -68.45) 10/29/2021   16:33:09  (  70.35, -68.38)    3.26                34
 11/01/2021   07:59:16   ( -70.46,-120.02) 11/01/2021   08:00:05  ( -70.48,-119.95)    3.39                49
 11/01/2021   08:49:59   (  70.33,  47.51) 11/01/2021   08:49:33  (  70.32,  47.46)    2.10                26
 11/01/2021   09:40:24   ( -69.37,-143.72) 11/01/2021   09:39:18  ( -69.38,-146.20)   97.44                66
 11/04/2021   00:15:33   ( -70.46,  -4.06) 11/04/2021   00:16:30  ( -70.45,  -4.11)    2.32                57
 11/04/2021   01:06:17   (  70.38, 163.38) 11/04/2021   01:05:56  (  70.39, 163.45)    3.06                21
 11/04/2021   01:56:46   ( -69.62, -28.14) 11/04/2021   01:55:37  ( -69.68, -29.92)   69.29                69
 11/06/2021   16:31:51   ( -70.50, 111.82) 11/06/2021   16:32:53  ( -70.52, 111.87)    2.46                62
 11/06/2021   17:22:34   (  70.38, -80.67) 11/06/2021   17:22:20  (  70.40, -80.65)    2.88                14
 11/06/2021   18:13:08   ( -69.88,  87.43) 11/06/2021   18:11:57  ( -69.91,  86.28)   43.92                71
 11/09/2021   08:48:08   ( -70.50,-132.22) 11/09/2021   08:49:17  ( -70.52,-132.24)    2.67                69
 11/09/2021   09:38:51   (  70.38,  35.28) 11/09/2021   09:38:44  (  70.41,  35.24)    3.15                 7
 11/09/2021   10:29:29   ( -70.09,-156.94) 11/09/2021   10:28:17  ( -70.14,-157.52)   22.61                72