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: 9/14/2025

Index	Date	Time (GOES-17)	GOES-17 Lat,Lon	NOAA-21 Lat,Lon	Distance(km)	Time Diff (sec)
1	09/16/2025	07:21:14	-0.23, -89.47	-0.25, -89.41	6.85	80
2	09/18/2025	19:24:24	0.24, -89.53	0.09, -90.18	74.71	80
3	09/19/2025	19:08:19	0.24, -89.53	1.09, -85.64	442.77	80
4	09/21/2025	07:30:06	-0.24, -89.51	0.09, -90.91	160.43	80
5	09/22/2025	07:08:40	-0.24, -89.51	-0.92, -86.37	357.12	80
6	09/23/2025	19:30:36	0.24, -89.57	-0.24, -91.68	240.35	80
7	09/24/2025	19:14:30	0.24, -89.58	0.77, -87.14	277.67	80
8	09/26/2025	07:36:17	-0.23, -89.56	0.40, -92.41	324.42	80
9	09/27/2025	07:14:52	-0.24, -89.57	-0.61, -87.88	193.17	80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/14/2025

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 09/14/2025 in txt file.

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