Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 21.  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)
 11/22/2021   16:31:39   ( -70.57, 111.94) 11/22/2021   16:32:41  ( -70.58, 111.91)    1.55                62
 11/22/2021   17:22:25   (  70.48, -80.61) 11/22/2021   17:22:08  (  70.49, -80.59)    1.33                17
 11/22/2021   18:12:57   ( -69.84,  87.70) 11/22/2021   18:11:47  ( -69.87,  86.17)   58.73                70
 11/25/2021   07:59:14   (  70.53,  60.12) 11/25/2021   07:59:38  (  70.56,  60.13)    3.48                24
 11/25/2021   08:49:57   ( -70.46,-132.45) 11/25/2021   08:49:08  ( -70.45,-132.41)    1.97                49
 11/27/2021   22:36:16   (  70.58,-159.20) 11/27/2021   22:37:10  (  70.58,-159.25)    1.82                54
 11/27/2021   23:26:59   ( -70.49,   8.26) 11/27/2021   23:26:40  ( -70.46,   8.22)    3.08                19
 11/28/2021   00:17:28   (  69.49, 177.09) 11/28/2021   00:16:22  (  69.53, 174.56)   98.89                66
 11/30/2021   13:13:30   (  70.61, -18.55) 11/30/2021   13:14:41  (  70.64, -18.55)    3.38                71
 11/30/2021   14:04:13   ( -70.51, 148.94) 11/30/2021   14:04:11  ( -70.53, 148.92)    2.72                 2
 11/30/2021   14:54:54   (  70.14, -43.18) 11/30/2021   14:53:42  (  70.20, -43.91)   28.55                72
 12/03/2021   03:51:00   (  70.85, 121.73) 12/03/2021   03:52:11  (  70.76, 122.22)   20.89                71
 12/03/2021   04:41:39   ( -70.52, -70.42) 12/03/2021   04:41:43  ( -70.54, -70.47)    2.83                 4
 12/03/2021   05:32:24   (  70.36,  97.13) 12/03/2021   05:31:11  (  70.37,  96.93)    7.69                73