Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 6 8.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-C) METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 06/08/2021   04:58:16   (  73.32,  98.93) 06/08/2021   04:57:30  (  73.33,  99.04)    3.38                46
 06/08/2021   05:48:59   ( -73.32, -93.75) 06/08/2021   05:48:13  ( -73.31, -93.68)    2.27                46
 06/08/2021   06:39:45   (  73.32,  73.56) 06/08/2021   06:38:52  (  73.31,  73.65)    3.28                53
 06/08/2021   07:30:27   ( -73.27,-119.01) 06/08/2021   07:29:35  ( -73.29,-119.07)    2.70                52
 06/08/2021   08:21:13   (  73.28,  48.30) 06/08/2021   08:20:14  (  73.29,  48.26)    1.64                59
 06/08/2021   09:11:56   ( -73.28,-144.39) 06/08/2021   09:10:57  ( -73.27,-144.46)    2.42                59
 06/08/2021   10:02:42   (  73.28,  22.92) 06/08/2021   10:01:36  (  73.26,  22.87)    2.26                66
 06/08/2021   10:53:25   ( -73.28,-169.76) 06/08/2021   10:52:18  ( -73.30,-169.73)    2.27                67
 06/08/2021   11:44:11   (  73.28,  -2.46) 06/08/2021   11:42:57  (  73.29,  -2.41)    2.01                74
 06/08/2021   12:34:54   ( -73.28, 164.86) 06/08/2021   12:33:40  ( -73.28, 164.88)    0.77                74
 06/08/2021   13:25:35   (  73.03, -27.28) 06/08/2021   13:24:23  (  73.07, -28.24)   31.30                72
 06/08/2021   14:16:18   ( -73.03, 140.04) 06/08/2021   14:15:06  ( -73.05, 139.05)   32.06                72
 06/08/2021   15:06:59   (  72.78, -52.11) 06/08/2021   15:05:50  (  72.79, -54.16)   67.26                69
 06/08/2021   15:57:42   ( -72.79, 115.20) 06/08/2021   15:56:33  ( -72.78, 113.14)   68.03                69