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: 8/20/2025

Index	Date	Time (GOES-17)	GOES-17 Lat,Lon	NOAA-21 Lat,Lon	Distance(km)	Time Diff (sec)
1	08/21/2025	07:11:33	-0.18, -89.46	-0.87, -86.43	345.89	80
2	08/22/2025	19:30:50	0.18, -89.51	-0.29, -91.74	253.39	80
3	08/23/2025	19:14:44	0.18, -89.51	0.69, -87.20	263.57	80
4	08/25/2025	07:36:32	-0.19, -89.47	0.47, -92.47	341.24	80
5	08/26/2025	07:15:07	-0.19, -89.48	-0.51, -87.93	175.94	80
6	08/27/2025	19:37:03	0.19, -89.53	-0.64, -93.24	422.44	80
7	08/28/2025	19:20:59	0.19, -89.54	0.40, -88.71	94.97	80
8	08/31/2025	07:21:22	-0.20, -89.52	-0.22, -89.45	7.89	80
9	09/02/2025	19:24:32	0.21, -89.58	0.07, -90.22	73.22	80

Figure of GOES-17 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/20/2025

Download SNOs between GOES-17 and NOAA-21 since TLE EPOCH: 08/20/2025 in txt file.

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