Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 11 20.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2025   04:10:15   (  -0.02, 140.76) (  -0.54, 138.52)  255.59                80
 11/22/2025   03:54:13   (  -0.02, 140.76) (   0.48, 143.04)  259.83                80
 11/23/2025   16:16:03   (   0.01, 140.78) (   0.69, 137.76)  343.81                80
 11/24/2025   15:54:41   (   0.00, 140.78) (  -0.33, 142.28)  171.42                80
 11/26/2025   04:16:41   (  -0.00, 140.76) (  -0.83, 136.96)  432.71                80
 11/27/2025   04:00:37   (   0.01, 140.76) (   0.14, 141.50)   83.36                80
 11/29/2025   16:03:45   (  -0.01, 140.76) (  -0.00, 140.74)    2.12                80
 12/02/2025   04:04:22   (   0.00, 140.72) (  -0.17, 139.95)   88.32                80
 12/03/2025   03:48:20   (  -0.00, 140.71) (   0.86, 144.47)  428.52                80
 12/04/2025   16:10:09   (   0.01, 140.71) (   0.37, 139.20)  172.17                80