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: 9/12/2025

Index	Date	Time (GOES-17)	GOES-17 Lat,Lon	NOAA-21 Lat,Lon	Distance(km)	Time Diff (sec)
1	09/13/2025	19:20:52	0.23, -89.52	0.42, -88.68	95.67	80
2	09/16/2025	07:21:14	-0.23, -89.48	-0.23, -89.41	7.33	80
3	09/18/2025	19:24:24	0.24, -89.53	0.07, -90.18	74.75	80
4	09/19/2025	19:08:19	0.24, -89.54	1.12, -85.65	442.80	80
5	09/21/2025	07:30:06	-0.24, -89.51	0.06, -90.92	160.14	80
6	09/22/2025	07:08:41	-0.24, -89.52	-0.95, -86.38	357.43	80
7	09/23/2025	19:30:36	0.24, -89.57	-0.21, -91.69	240.25	80
8	09/24/2025	19:14:31	0.24, -89.59	0.79, -87.15	277.79	80
9	09/26/2025	07:36:18	-0.23, -89.57	0.39, -92.42	324.06	80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/12/2025

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/12/2025 in txt file.

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