Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 9 2.  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   03:35:08   (  78.23, 103.70) 09/10/2021   03:33:54  (  78.23, 103.55)    3.40                74
 09/10/2021   04:25:52   ( -78.24, -89.01) 09/10/2021   04:24:52  ( -78.26, -89.02)    2.16                60
 09/10/2021   05:16:38   (  78.27,  78.09) 09/10/2021   05:15:54  (  78.24,  78.11)    3.96                44
 09/10/2021   06:07:21   ( -78.24,-114.40) 09/10/2021   06:06:52  ( -78.27,-114.46)    3.13                29
 09/10/2021   06:58:07   (  78.28,  52.71) 09/10/2021   06:57:54  (  78.25,  52.67)    3.33                13
 09/10/2021   07:48:51   ( -78.28,-140.01) 09/10/2021   07:48:52  ( -78.27,-139.91)    2.46                 1
 09/10/2021   08:39:36   (  78.28,  27.32) 09/10/2021   08:39:54  (  78.26,  27.23)    3.21                18
 09/10/2021   09:30:20   ( -78.29,-165.39) 09/10/2021   09:30:52  ( -78.28,-165.35)    1.06                32
 09/10/2021   10:21:05   (  78.28,   1.93) 09/10/2021   10:21:53  (  78.30,   2.02)    3.00                48
 09/10/2021   11:11:49   ( -78.29, 169.22) 09/10/2021   11:12:52  ( -78.29, 169.21)    0.41                63
 09/10/2021   12:02:40   (  78.52, -24.81) 09/10/2021   12:03:48  (  78.49, -22.25)   56.86                68