Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 2 12.  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)
 02/12/2021   03:16:55   (  73.08, 124.06) 02/12/2021   03:16:21  (  73.10, 123.98)    3.24                34
 02/12/2021   04:07:39   ( -73.13, -68.71) 02/12/2021   04:07:03  ( -73.14, -68.61)    3.58                36
 02/12/2021   04:58:24   (  73.08,  98.69) 02/12/2021   04:57:43  (  73.08,  98.60)    3.08                41
 02/12/2021   05:49:08   ( -73.13, -94.08) 02/12/2021   05:48:25  ( -73.12, -93.99)    2.90                43
 02/12/2021   06:39:53   (  73.08,  73.32) 02/12/2021   06:39:04  (  73.11,  73.32)    2.78                49
 02/12/2021   07:30:36   ( -73.08,-119.34) 02/12/2021   07:29:47  ( -73.10,-119.38)    2.74                49
 02/12/2021   08:21:22   (  73.08,  47.95) 02/12/2021   08:20:26  (  73.09,  47.94)    0.55                56
 02/12/2021   09:12:05   ( -73.08,-144.71) 02/12/2021   09:11:09  ( -73.08,-144.76)    1.58                56
 02/12/2021   10:02:51   (  73.08,  22.58) 02/12/2021   10:01:48  (  73.07,  22.55)    2.09                63
 02/12/2021   10:53:34   ( -73.08,-170.08) 02/12/2021   10:52:31  ( -73.06,-170.15)    2.95                63
 02/12/2021   11:44:20   (  73.09,  -2.79) 02/12/2021   11:43:09  (  73.10,  -2.72)    2.68                71
 02/12/2021   12:35:03   ( -73.08, 164.55) 02/12/2021   12:33:52  ( -73.09, 164.58)    1.55                71
 02/12/2021   13:25:47   (  72.99, -27.95) 02/12/2021   13:24:33  (  72.98, -28.32)   12.29                74
 02/12/2021   14:16:30   ( -72.98, 139.39) 02/12/2021   14:15:16  ( -72.97, 138.98)   13.47                74
 02/12/2021   15:07:10   (  72.68, -52.68) 02/12/2021   15:06:00  (  72.70, -54.24)   51.67                70
 02/12/2021   15:57:53   ( -72.68, 114.66) 02/12/2021   15:56:43  ( -72.69, 113.07)   52.66                70
 02/12/2021   16:48:34   (  72.43, -77.53) 02/12/2021   16:47:27  (  72.42, -80.13)   87.48                67
 02/12/2021   17:39:17   ( -72.42,  89.80) 02/12/2021   17:38:10  ( -72.42,  87.17)   88.33                67