Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 4 11.  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)
 04/11/2021   03:16:59   (  73.17, 124.19) 04/11/2021   03:16:20  (  73.20, 124.15)    3.38                39
 04/11/2021   04:07:43   ( -73.18, -68.51) 04/11/2021   04:07:01  ( -73.20, -68.53)    2.36                42
 04/11/2021   04:58:28   (  73.18,  98.81) 04/11/2021   04:57:42  (  73.18,  98.77)    1.70                46
 04/11/2021   05:49:12   ( -73.18, -93.88) 04/11/2021   05:48:23  ( -73.18, -93.91)    1.07                49
 04/11/2021   06:39:57   (  73.18,  73.44) 04/11/2021   06:39:04  (  73.16,  73.38)    2.63                53
 04/11/2021   07:30:41   ( -73.18,-119.25) 04/11/2021   07:29:45  ( -73.16,-119.30)    3.02                56
 04/11/2021   08:21:26   (  73.18,  48.07) 04/11/2021   08:20:25  (  73.19,  48.10)    1.83                61
 04/11/2021   09:12:10   ( -73.18,-144.63) 04/11/2021   09:11:06  ( -73.19,-144.57)    1.80                64
 04/11/2021   10:02:55   (  73.18,  22.69) 04/11/2021   10:01:47  (  73.17,  22.72)    1.44                68
 04/11/2021   10:53:39   ( -73.19,-170.00) 04/11/2021   10:52:28  ( -73.17,-169.96)    2.44                71
 04/11/2021   11:44:23   (  73.13,  -2.57) 04/11/2021   11:43:09  (  73.15,  -2.67)    3.64                74
 04/11/2021   12:35:05   ( -73.04, 164.96) 04/11/2021   12:33:52  ( -73.05, 164.44)   16.75                73
 04/11/2021   13:25:47   (  72.88, -27.40) 04/11/2021   13:24:36  (  72.88, -28.59)   39.03                71
 04/11/2021   14:16:29   ( -72.79, 140.12) 04/11/2021   14:15:19  ( -72.77, 138.52)   52.55                70
 04/11/2021   15:07:11   (  72.63, -52.24) 04/11/2021   15:06:03  (  72.60, -54.50)   75.05                68
 04/11/2021   15:57:53   ( -72.54, 115.27) 04/11/2021   15:56:46  ( -72.50, 112.62)   88.44                67