Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 10 17.  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)
 10/18/2025   15:48:17   (  -0.03, 140.75) (  -0.73, 143.77)  345.29                80
 10/20/2025   04:10:11   (   0.03, 140.75) (  -0.45, 138.48)  258.21                80
 10/21/2025   03:54:05   (   0.03, 140.74) (   0.54, 143.02)  259.86                80
 10/22/2025   16:15:49   (  -0.01, 140.72) (   0.68, 137.77)  336.30                80
 10/23/2025   15:54:24   (  -0.00, 140.71) (  -0.38, 142.30)  181.95                80
 10/25/2025   04:18:57   (  -0.01, 140.71) (  -0.86, 137.02)  420.83                80
 10/26/2025   03:57:31   (  -0.00, 140.70) (   0.20, 141.55)   97.60                80
 10/27/2025   16:21:56   (   0.01, 140.67) (   1.00, 136.30)  497.87                80
 10/28/2025   16:00:30   (   0.00, 140.65) (  -0.07, 140.83)   20.91                80
 10/31/2025   04:06:17   (  -0.00, 140.62) (  -0.15, 140.08)   62.26                80