Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 29.  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)
 11/04/2021   05:22:41   ( -78.11,-102.12) 11/04/2021   05:21:27  ( -78.10,-102.01)    2.66                74
 11/04/2021   06:13:26   (  78.12,  65.13) 11/04/2021   06:12:27  (  78.09,  65.18)    3.24                59
 11/04/2021   07:04:10   ( -78.11,-127.51) 11/04/2021   07:03:27  ( -78.11,-127.46)    1.23                43
 11/04/2021   07:54:55   (  78.12,  39.74) 11/04/2021   07:54:27  (  78.10,  39.72)    2.76                28
 11/04/2021   08:45:39   ( -78.12,-152.90) 11/04/2021   08:45:27  ( -78.12,-152.91)    0.34                12
 11/04/2021   09:36:24   (  78.13,  14.35) 11/04/2021   09:36:27  (  78.11,  14.27)    3.03                 3
 11/04/2021   10:27:08   ( -78.12,-178.30) 11/04/2021   10:27:27  ( -78.13,-178.36)    1.70                19
 11/04/2021   11:17:53   (  78.13, -11.05) 11/04/2021   11:18:26  (  78.15, -10.97)    2.78                33
 11/04/2021   12:08:37   ( -78.12, 156.31) 11/04/2021   12:09:27  ( -78.13, 156.18)    3.13                50
 11/04/2021   12:59:22   (  78.14, -36.44) 11/04/2021   13:00:26  (  78.16, -36.42)    2.43                64
 11/04/2021   13:50:13   ( -78.40, 129.38) 11/04/2021   13:51:21  ( -78.36, 132.09)   60.93                68