Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 8 5.  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)
 08/05/2021   03:16:18   (  73.43, 124.61) 08/05/2021   03:15:40  (  73.45, 124.64)    2.36                38
 08/05/2021   04:07:02   ( -73.43, -68.07) 08/05/2021   04:06:22  ( -73.41, -68.13)    3.21                40
 08/05/2021   04:57:47   (  73.43,  99.23) 08/05/2021   04:57:02  (  73.43,  99.25)    0.89                45
 08/05/2021   05:48:31   ( -73.43, -93.45) 08/05/2021   05:47:43  ( -73.43, -93.41)    1.22                48
 08/05/2021   06:39:16   (  73.44,  73.86) 08/05/2021   06:38:24  (  73.40,  73.86)    3.67                52
 08/05/2021   07:30:00   ( -73.44,-118.82) 08/05/2021   07:29:05  ( -73.41,-118.80)    2.94                55
 08/05/2021   08:20:45   (  73.44,  48.48) 08/05/2021   08:19:45  (  73.43,  48.58)    3.37                60
 08/05/2021   09:11:28   ( -73.39,-144.09) 08/05/2021   09:10:27  ( -73.39,-144.19)    3.26                61
 08/05/2021   10:02:13   (  73.39,  23.21) 08/05/2021   10:01:07  (  73.41,  23.19)    1.81                66
 08/05/2021   10:52:57   ( -73.39,-169.47) 08/05/2021   10:51:48  ( -73.41,-169.47)    2.43                69
 08/05/2021   11:43:42   (  73.40,  -2.16) 08/05/2021   11:42:29  (  73.39,  -2.20)    1.82                73
 08/05/2021   12:34:25   ( -73.35, 165.27) 08/05/2021   12:33:11  ( -73.34, 165.03)    7.73                74
 08/05/2021   13:25:07   (  73.20, -27.09) 08/05/2021   13:23:55  (  73.16, -28.04)   30.81                72
 08/05/2021   14:15:49   ( -73.10, 140.45) 08/05/2021   14:14:38  ( -73.07, 139.09)   44.17                71
 08/05/2021   15:06:30   (  72.90, -51.81) 08/05/2021   15:05:22  (  72.89, -53.97)   70.61                68
 08/05/2021   15:57:12   ( -72.80, 115.72) 08/05/2021   15:56:05  ( -72.79, 113.17)   83.96                67