Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 6 12.  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)
 06/12/2021   05:21:36   (  69.80,  99.31) 06/12/2021   05:22:14  (  69.80,  99.28)    1.54                38
 06/12/2021   06:12:17   ( -69.70, -93.23) 06/12/2021   06:11:44  ( -69.69, -93.24)    1.85                33
 06/14/2021   21:37:56   (  69.85,-144.83) 06/14/2021   21:38:40  (  69.85,-144.78)    2.14                44
 06/14/2021   22:28:37   ( -69.76,  22.63) 06/14/2021   22:28:10  ( -69.74,  22.70)    3.21                27
 06/17/2021   13:54:14   (  69.86, -28.90) 06/17/2021   13:55:06  (  69.84, -28.91)    2.23                52
 06/17/2021   14:44:55   ( -69.76, 138.57) 06/17/2021   14:44:36  ( -69.73, 138.57)    2.54                19
 06/17/2021   15:35:24   (  68.85, -52.83) 06/17/2021   15:34:16  (  68.90, -54.88)   82.47                68
 06/20/2021   06:10:33   (  69.87,  87.03) 06/20/2021   06:11:32  (  69.88,  87.02)    1.38                59
 06/20/2021   07:01:14   ( -69.76,-105.49) 06/20/2021   07:01:02  ( -69.78,-105.49)    2.00                12
 06/20/2021   07:51:48   (  69.13,  62.74) 06/20/2021   07:50:38  (  69.16,  61.33)   55.61                70
 06/22/2021   22:26:53   (  69.93,-157.12) 06/22/2021   22:27:58  (  69.91,-157.06)    3.18                65
 06/22/2021   23:17:34   ( -69.81,  10.37) 06/22/2021   23:17:28  ( -69.81,  10.44)    2.63                 6
 06/23/2021   00:08:11   (  69.35, 178.36) 06/23/2021   00:07:00  (  69.42, 177.55)   32.71                71
 06/25/2021   14:43:13   (  69.99, -41.28) 06/25/2021   14:44:24  (  69.94, -41.13)    7.82                71
 06/25/2021   15:33:53   ( -69.82, 126.30) 06/25/2021   15:33:55  ( -69.79, 126.29)    3.15                 2
 06/25/2021   16:24:35   (  69.63, -66.10) 06/25/2021   16:23:22  (  69.67, -66.23)    7.09                73