Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/9/2023
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 04/11/2023 19:00:10 -70.53, 70.49 117.94 04/11/2023 19:00:51 -70.54, 70.47 117.94 1.66 41
2 04/11/2023 19:50:54 70.41,-122.03 61.93 04/11/2023 19:50:14 70.44,-122.02 61.96 2.65 40
3 04/14/2023 07:54:01 -70.52,-122.97 118.88 04/14/2023 07:54:27 -70.51,-122.99 118.89 1.43 26
4 04/14/2023 08:44:45 70.41, 44.51 61.00 04/14/2023 08:43:50 70.41, 44.52 61.00 0.55 55
5 04/16/2023 19:57:19 71.14,-124.78 60.88 04/16/2023 19:58:28 71.02,-123.30 60.71 55.12 69
6 04/16/2023 20:47:51 -70.53, 43.55 119.78 04/16/2023 20:48:01 -70.50, 43.58 119.81 2.50 10
7 04/16/2023 21:38:35 70.42,-148.97 60.10 04/16/2023 21:37:24 70.40,-148.91 60.09 2.87 71
8 04/19/2023 08:50:59 70.58, 42.68 59.40 04/19/2023 08:52:10 70.60, 42.65 59.41 2.54 71
9 04/19/2023 09:41:41 -70.49,-149.85 120.71 04/19/2023 09:41:36 -70.47,-149.89 120.73 2.59 5
10 04/19/2023 10:32:16 69.91, 18.35 58.68 04/19/2023 10:31:06 69.98, 17.07 58.79 49.43 70
11 04/21/2023 21:44:50 70.61,-150.82 58.56 04/21/2023 21:45:44 70.59,-150.78 58.53 2.36 54
12 04/21/2023 22:35:31 -70.46, 16.73 121.62 04/21/2023 22:35:10 -70.46, 16.67 121.61 2.18 21

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/9/2023
SNOs_Map_NOAA-21_TERRA_20230410.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/09/2023 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA