Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 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)
 05/18/2025   04:16:32   (  -0.00, 140.77) (  -0.84, 136.93)  437.87                80
 05/19/2025   04:00:28   (  -0.01, 140.77) (   0.12, 141.46)   78.74                80
 05/21/2025   16:00:54   (   0.01, 140.75) (   0.05, 140.71)    5.43                80
 05/24/2025   04:04:08   (  -0.01, 140.73) (  -0.21, 139.93)   91.44                80
 05/25/2025   03:48:04   (  -0.01, 140.72) (   0.82, 144.45)  425.81                80
 05/26/2025   16:09:54   (  -0.00, 140.69) (   0.31, 139.17)  173.20                80
 05/27/2025   15:48:30   (  -0.00, 140.68) (  -0.66, 143.70)  344.09                80
 05/29/2025   04:10:27   (   0.01, 140.67) (  -0.52, 138.39)  259.63                80
 05/30/2025   03:54:24   (   0.00, 140.65) (   0.51, 142.92)  258.35                80
 05/31/2025   16:13:33   (  -0.00, 140.61) (   0.66, 137.64)  338.79                80