Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 23.  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   ( -78.08,-101.98) 11/04/2021   05:21:28  ( -78.09,-102.09)    2.69                73
 11/04/2021   06:13:26   (  78.10,  65.25) 11/04/2021   06:12:27  (  78.11,  65.29)    1.69                59
 11/04/2021   07:04:11   ( -78.13,-127.58) 11/04/2021   07:03:28  ( -78.10,-127.55)    3.51                43
 11/04/2021   07:54:55   (  78.10,  39.86) 11/04/2021   07:54:27  (  78.12,  39.84)    1.82                28
 11/04/2021   08:45:40   ( -78.13,-152.98) 11/04/2021   08:45:28  ( -78.10,-153.00)    2.99                12
 11/04/2021   09:36:24   (  78.11,  14.47) 11/04/2021   09:36:27  (  78.13,  14.38)    2.85                 3
 11/04/2021   10:27:09   ( -78.13,-178.37) 11/04/2021   10:27:28  ( -78.11,-178.45)    3.11                19
 11/04/2021   11:17:54   (  78.15, -11.14) 11/04/2021   11:18:27  (  78.13, -11.07)    2.52                33
 11/04/2021   12:08:38   ( -78.14, 156.24) 11/04/2021   12:09:27  ( -78.16, 156.32)    2.78                49
 11/04/2021   12:59:23   (  78.15, -36.53) 11/04/2021   13:00:27  (  78.14, -36.53)    1.64                64
 11/04/2021   13:50:13   ( -78.38, 129.53) 11/04/2021   13:51:22  ( -78.35, 132.01)   55.66                69