Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 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)
 05/19/2025   04:00:28   (  -0.01, 140.77) (   0.13, 141.46)   78.95                80
 05/21/2025   16:00:54   (   0.02, 140.75) (   0.05, 140.71)    4.63                80
 05/24/2025   04:04:08   (  -0.02, 140.72) (  -0.21, 139.93)   90.91                80
 05/25/2025   03:48:04   (  -0.01, 140.71) (   0.82, 144.45)  426.36                80
 05/26/2025   16:09:55   (   0.00, 140.69) (   0.31, 139.17)  172.71                80
 05/27/2025   15:48:30   (   0.00, 140.68) (  -0.66, 143.70)  344.63                80
 05/29/2025   04:10:27   (   0.00, 140.66) (  -0.53, 138.39)  258.91                80
 05/30/2025   03:54:24   (  -0.00, 140.64) (   0.51, 142.92)  259.11                80
 05/31/2025   16:13:33   (   0.00, 140.61) (   0.67, 137.64)  338.08                80
 06/01/2025   15:57:30   (   0.01, 140.58) (  -0.37, 142.16)  180.53                80