Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 24.  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)
 06/25/2021   14:43:12   (  69.95, -41.21) 06/25/2021   14:44:24  (  69.94, -41.14)    3.30                72
 06/25/2021   15:33:53   ( -69.84, 126.27) 06/25/2021   15:33:54  ( -69.82, 126.33)    3.30                 1
 06/25/2021   16:24:35   (  69.64, -66.11) 06/25/2021   16:23:22  (  69.66, -66.24)    5.62                73
 06/28/2021   06:59:35   (  70.23,  74.30) 06/28/2021   07:00:46  (  70.12,  75.00)   29.09                71
 06/28/2021   07:50:11   ( -69.85,-117.80) 06/28/2021   07:50:19  ( -69.85,-117.75)    1.82                 8
 06/28/2021   08:40:54   (  69.71,  49.73) 06/28/2021   08:39:47  (  69.68,  49.67)    3.56                67
 06/30/2021   23:15:58   (  70.46,-170.12) 06/30/2021   23:17:08  (  70.36,-168.78)   51.12                70
 07/01/2021   00:06:30   ( -69.86,  -1.87) 07/01/2021   00:06:45  ( -69.87,  -1.84)    1.41                15
 07/01/2021   00:57:13   (  69.72, 165.65) 07/01/2021   00:56:12  (  69.75, 165.64)    3.62                61
 07/03/2021   15:32:22   (  70.74, -54.63) 07/03/2021   15:33:29  (  70.64, -52.48)   79.87                67
 07/03/2021   16:22:49   ( -69.87, 114.06) 07/03/2021   16:23:11  ( -69.88, 114.06)    1.45                22
 07/03/2021   17:13:32   (  69.74, -78.44) 07/03/2021   17:12:38  (  69.77, -78.46)    3.09                54
 07/06/2021   08:39:08   ( -69.88,-130.02) 07/06/2021   08:39:37  ( -69.89,-130.05)    1.66                29
 07/06/2021   09:29:51   (  69.76,  37.48) 07/06/2021   09:29:04  (  69.77,  37.43)    2.45                47