Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2023 10 21.  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)
 10/21/2023   03:17:20   (  75.15, 128.34) 10/21/2023   03:16:24  (  75.13, 128.28)    2.11                56
 10/21/2023   04:08:05   ( -75.14, -64.32) 10/21/2023   04:07:06  ( -75.16, -64.32)    2.30                59
 10/21/2023   04:58:51   (  75.13, 103.00) 10/21/2023   04:57:45  (  75.16, 103.03)    3.37                66
 10/21/2023   05:49:36   ( -75.12, -89.66) 10/21/2023   05:48:28  ( -75.14, -89.72)    2.35                68
 10/21/2023   06:40:22   (  75.12,  77.66) 10/21/2023   06:39:07  (  75.14,  77.63)    2.73                75
 10/21/2023   07:31:05   ( -75.02,-114.72) 10/21/2023   07:29:52  ( -75.03,-115.39)   19.20                73
 10/21/2023   08:21:45   (  74.73,  53.42) 10/21/2023   08:20:37  (  74.74,  51.15)   66.52                68
 10/21/2023   09:12:29   ( -74.67,-139.11) 10/21/2023   09:11:21  ( -74.67,-141.72)   76.62                68