Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 20.  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)
 03/29/2021   06:38:30   ( -78.67,-125.83) 03/29/2021   06:37:20  ( -78.69,-125.70)    3.25                70
 03/29/2021   07:29:14   (  78.67,  41.54) 03/29/2021   07:28:15  (  78.66,  41.38)    3.45                59
 03/29/2021   08:19:59   ( -78.67,-151.21) 03/29/2021   08:19:21  ( -78.67,-151.34)    3.07                38
 03/29/2021   09:10:44   (  78.70,  15.92) 03/29/2021   09:10:15  (  78.67,  15.98)    3.65                29
 03/29/2021   10:01:28   ( -78.68,-176.58) 03/29/2021   10:01:21  ( -78.68,-176.74)    3.47                 7
 03/29/2021   10:52:13   (  78.71,  -9.45) 03/29/2021   10:52:15  (  78.69,  -9.41)    2.12                 2
 03/29/2021   11:42:58   ( -78.71, 157.80) 03/29/2021   11:43:21  ( -78.69, 157.86)    2.48                23
 03/29/2021   12:33:42   (  78.71, -34.83) 03/29/2021   12:34:15  (  78.70, -34.81)    0.62                33
 03/29/2021   13:24:27   ( -78.71, 132.43) 03/29/2021   13:25:21  ( -78.71, 132.46)    1.03                54
 03/29/2021   14:15:11   (  78.71, -60.21) 03/29/2021   14:16:15  (  78.72, -60.21)    0.95                64