Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/16/2017
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 09/18/2017 10:39:44 -68.44,-161.33 113.38 09/18/2017 10:40:49 -68.44,-161.35 113.38 1.03 65
2 09/18/2017 11:30:28 68.31, 6.15 66.50 09/18/2017 11:30:16 68.33, 6.16 66.52 2.62 12
3 09/18/2017 12:21:03 -67.85, 174.04 113.95 09/18/2017 12:19:51 -67.94, 173.34 113.86 31.38 72
4 09/21/2017 02:56:40 -68.39, -45.50 112.39 09/21/2017 02:57:18 -68.39, -45.53 112.39 1.39 38
5 09/21/2017 03:47:24 68.26, 121.98 67.49 09/21/2017 03:46:45 68.28, 121.98 67.51 2.04 39
6 09/23/2017 18:23:00 68.80, -97.59 69.05 09/23/2017 18:24:11 68.71, -96.89 68.96 30.11 71
7 09/23/2017 19:13:35 -68.34, 70.33 111.40 09/23/2017 19:13:46 -68.32, 70.27 111.42 3.17 11
8 09/23/2017 20:04:19 68.21,-122.20 68.49 09/23/2017 20:03:13 68.21,-122.22 68.48 1.18 66
9 09/26/2017 10:39:50 68.43, 18.66 69.73 09/26/2017 10:40:43 68.45, 18.68 69.75 2.43 53
10 09/26/2017 11:30:31 -68.30,-173.84 110.40 09/26/2017 11:30:14 -68.29,-173.88 110.40 1.46 17
11 09/26/2017 12:21:02 67.47, -5.51 68.80 09/26/2017 12:19:53 67.50, -7.15 68.82 70.07 69
12 09/29/2017 02:56:46 68.39, 134.48 70.73 09/29/2017 02:57:11 68.41, 134.51 70.75 2.13 25
13 09/29/2017 03:47:27 -68.25, -58.02 109.40 09/29/2017 03:46:42 -68.25, -58.05 109.40 1.18 45

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 9/16/2017
SNOs_Map_NPP_TERRA_20170917.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 09/16/2017 in txt file.

Historical Predictions of SNOs between NPP and TERRA

NCC Satellite Simultaneous Nadir Overpasses (SNOs) Prediction Service