Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between GOES-17 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/10/2025

Index	Date	Time (GOES-17)	GOES-17 Lat,Lon	NOAA-21 Lat,Lon	Distance(km)	Time Diff (sec)
1	09/11/2025	07:15:02	-0.22, -89.48	-0.57, -87.91	178.53	80
2	09/12/2025	19:36:57	0.22, -89.52	-0.60, -93.22	421.19	80
3	09/13/2025	19:20:52	0.23, -89.52	0.40, -88.68	95.34	80
4	09/16/2025	07:21:14	-0.23, -89.48	-0.27, -89.42	7.55	80
5	09/18/2025	19:24:24	0.24, -89.52	0.11, -90.19	75.16	80
6	09/19/2025	19:08:19	0.24, -89.53	1.11, -85.65	442.35	80
7	09/21/2025	07:30:06	-0.24, -89.51	0.07, -90.92	160.17	80
8	09/22/2025	07:08:41	-0.24, -89.52	-0.94, -86.38	357.39	80
9	09/23/2025	19:30:36	0.24, -89.57	-0.22, -91.68	240.72	80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/10/2025

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/10/2025 in txt file.

Historical Predications of SNOs between GOES-17 and NOAA-21