Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2021 10 28.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-A) METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 11/10/2021   11:03:46   (  78.11,  -7.36) 11/10/2021   11:04:51  (  78.10,  -3.68)   84.57                65
 11/10/2021   11:54:27   ( -77.97, 160.69) 11/10/2021   11:55:36  ( -77.95, 162.93)   52.05                69
 11/10/2021   12:45:07   (  77.79, -31.08) 11/10/2021   12:46:20  (  77.78, -30.53)   12.86                73
 11/10/2021   13:35:50   ( -77.74, 136.53) 11/10/2021   13:37:03  ( -77.72, 136.50)    2.00                73
 11/10/2021   14:26:34   (  77.72, -56.06) 11/10/2021   14:27:43  (  77.72, -56.17)    2.53                69
 11/10/2021   15:17:19   ( -77.74, 111.14) 11/10/2021   15:18:24  ( -77.74, 111.26)    2.75                65
 11/10/2021   16:08:03   (  77.72, -81.45) 11/10/2021   16:09:04  (  77.74, -81.41)    2.39                61
 11/10/2021   16:58:48   ( -77.74,  85.75) 11/10/2021   16:59:46  ( -77.72,  85.82)    3.22                58
 11/10/2021   17:49:32   (  77.73,-106.84) 11/10/2021   17:50:26  (  77.72,-106.85)    0.69                54
 11/10/2021   18:40:16   ( -77.71,  60.56) 11/10/2021   18:41:07  ( -77.74,  60.58)    3.71                51
 11/10/2021   19:31:01   (  77.73,-132.23) 11/10/2021   19:31:47  (  77.74,-132.09)    3.58                46
 11/10/2021   20:21:45   ( -77.71,  35.17) 11/10/2021   20:22:29  ( -77.72,  35.14)    1.17                44
 11/10/2021   21:12:30   (  77.73,-157.62) 11/10/2021   21:13:09  (  77.72,-157.53)    2.78                39
 11/10/2021   22:03:13   ( -77.72,   9.78) 11/10/2021   22:03:50  ( -77.70,   9.70)    2.73                37
 11/10/2021   22:53:57   (  77.70, 177.19) 11/10/2021   22:54:30  (  77.70, 177.03)    3.65                33
 11/10/2021   23:44:42   ( -77.72, -15.61) 11/10/2021   23:45:11  ( -77.72, -15.54)    1.58                29
 11/11/2021   00:35:26   (  77.70, 151.80) 11/11/2021   00:35:51  (  77.72, 151.79)    2.01                25
 11/11/2021   01:26:11   ( -77.72, -41.00) 11/11/2021   01:26:33  ( -77.70, -40.98)    2.91                22