Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 8 28.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2021   03:35:09   (  78.24, 103.67) 09/10/2021   03:33:54  (  78.26, 103.72)    2.37                75
 09/10/2021   04:25:53   ( -78.24, -89.03) 09/10/2021   04:24:53  ( -78.25, -89.06)    1.26                60
 09/10/2021   05:16:38   (  78.24,  78.28) 09/10/2021   05:15:54  (  78.27,  78.28)    2.71                44
 09/10/2021   06:07:22   ( -78.24,-114.42) 09/10/2021   06:06:53  ( -78.26,-114.50)    2.58                29
 09/10/2021   06:58:07   (  78.24,  52.89) 09/10/2021   06:57:54  (  78.28,  52.84)    3.59                13
 09/10/2021   07:48:52   ( -78.29,-140.03) 09/10/2021   07:48:53  ( -78.27,-139.95)    2.67                 1
 09/10/2021   08:39:37   (  78.29,  27.28) 09/10/2021   08:39:54  (  78.28,  27.40)    2.72                17
 09/10/2021   09:30:21   ( -78.29,-165.41) 09/10/2021   09:30:53  ( -78.28,-165.39)    1.46                32
 09/10/2021   10:21:06   (  78.29,   1.90) 09/10/2021   10:21:54  (  78.29,   1.96)    1.61                48
 09/10/2021   11:11:50   ( -78.29, 169.20) 09/10/2021   11:12:53  ( -78.29, 169.17)    1.04                63
 09/10/2021   12:02:40   (  78.49, -24.62) 09/10/2021   12:03:49  (  78.48, -22.31)   51.29                69