Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 10 18.  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)
 10/20/2025   04:10:11   (   0.03, 140.75) (  -0.48, 138.48)  258.25                80
 10/21/2025   03:54:04   (   0.03, 140.74) (   0.52, 143.03)  259.74                80
 10/22/2025   16:15:50   (  -0.02, 140.72) (   0.64, 137.77)  336.79                80
 10/23/2025   15:54:23   (  -0.02, 140.71) (  -0.36, 142.31)  181.38                80
 10/25/2025   04:18:57   (   0.01, 140.71) (  -0.82, 137.01)  421.35                80
 10/26/2025   03:57:31   (   0.01, 140.70) (   0.18, 141.55)   97.06                80
 10/27/2025   16:21:56   (  -0.01, 140.67) (   0.96, 136.29)  498.52                80
 10/28/2025   16:00:30   (  -0.01, 140.66) (  -0.05, 140.83)   19.99                80
 10/31/2025   04:06:18   (   0.01, 140.63) (  -0.12, 140.08)   62.91                80
 11/01/2025   03:44:51   (   0.02, 140.61) (   0.90, 144.62)  456.43                80