Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 11 15.  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)
 11/16/2025   04:03:51   (   0.01, 140.79) (  -0.13, 140.05)   84.47                80
 11/17/2025   03:47:48   (   0.00, 140.79) (   0.83, 144.58)  431.33                80
 11/18/2025   16:09:38   (   0.01, 140.78) (   0.35, 139.31)  168.64                80
 11/19/2025   15:48:16   (   0.01, 140.78) (  -0.67, 143.83)  347.06                80
 11/21/2025   04:10:16   (  -0.02, 140.79) (  -0.50, 138.51)  259.36                80
 11/22/2025   03:54:12   (  -0.01, 140.78) (   0.47, 143.04)  256.75                80
 11/23/2025   16:16:03   (   0.02, 140.76) (   0.69, 137.76)  342.34                80
 11/24/2025   15:54:40   (   0.01, 140.76) (  -0.34, 142.28)  173.77                80
 11/26/2025   04:19:20   (  -0.01, 140.76) (  -0.87, 136.97)  431.92                80
 11/27/2025   03:57:57   (  -0.01, 140.75) (   0.17, 141.49)   84.91                80
 11/29/2025   16:01:04   (   0.01, 140.70) (   0.01, 140.74)    4.83                80