Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2023 9 11.  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)
 09/12/2023   00:12:28   (  74.09, 176.82) 09/12/2023   00:13:09  (  74.07, 176.85)    2.44                41
 09/12/2023   01:03:11   ( -73.99, -15.63) 09/12/2023   01:02:33  ( -73.99, -15.66)    0.99                38
 09/14/2023   12:16:30   ( -74.08, 175.87) 09/14/2023   12:17:01  ( -74.06, 175.85)    1.95                31
 09/14/2023   13:07:15   (  74.02, -16.66) 09/14/2023   13:06:24  (  73.98, -16.67)    3.74                51
 09/17/2023   00:20:33   (  74.07, 174.92) 09/17/2023   00:20:51  (  74.07, 174.88)    1.24                18
 09/17/2023   01:11:17   ( -74.01, -17.62) 09/17/2023   01:10:15  ( -74.01, -17.60)    0.74                62
 09/19/2023   11:34:03   (  74.71,   4.94) 09/19/2023   11:35:09  (  74.60,   7.47)   75.54                66
 09/19/2023   12:24:35   ( -74.06, 173.96) 09/19/2023   12:24:42  ( -74.08, 173.92)    2.61                 7
 09/19/2023   13:15:18   (  73.91, -18.35) 09/19/2023   13:14:05  (  73.99, -18.64)   12.05                73
 09/21/2023   23:37:56   ( -74.27,   5.15) 09/21/2023   23:39:08  ( -74.18,   5.49)   14.20                72
 09/22/2023   00:28:37   (  74.08, 172.96) 09/22/2023   00:28:30  (  74.08, 172.92)    1.05                 7
 09/22/2023   01:19:11   ( -73.52, -18.37) 09/22/2023   01:18:03  ( -73.56, -20.54)   68.66                68
 09/24/2023   11:41:55   (  74.15,   4.49) 09/24/2023   11:42:56  (  74.14,   4.43)    2.01                61
 09/24/2023   12:32:39   ( -74.07, 171.99) 09/24/2023   12:32:20  ( -74.10, 171.99)    3.18                19