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: 4/14/2019
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 04/14/2019 19:12:40 68.36,-109.61 58.74 04/14/2019 19:13:34 68.34,-109.60 58.71 2.88 54
2 04/14/2019 20:03:21 -68.23, 57.89 121.41 04/14/2019 20:03:04 -68.23, 57.90 121.41 0.49 17
3 04/14/2019 20:53:52 67.39,-133.78 57.74 04/14/2019 20:52:43 67.45,-135.36 57.81 67.47 69
4 04/17/2019 11:29:36 68.30, 6.23 57.73 04/17/2019 11:30:06 68.28, 6.20 57.70 2.62 30
5 04/17/2019 12:20:17 -68.16, 173.73 122.43 04/17/2019 12:19:36 -68.18, 173.71 122.42 1.68 41
6 04/20/2019 02:55:55 -68.74, -45.89 122.75 04/20/2019 02:57:06 -68.68, -45.10 122.83 32.90 71
7 04/20/2019 03:46:32 68.25, 122.07 56.74 04/20/2019 03:46:39 68.23, 122.01 56.72 2.76 7
8 04/20/2019 04:37:14 -68.16, -70.50 123.37 04/20/2019 04:36:09 -68.13, -70.48 123.40 2.94 65
9 04/22/2019 19:12:45 -68.36, 70.37 124.05 04/22/2019 19:13:45 -68.36, 70.37 124.06 0.63 60
10 04/22/2019 20:03:29 68.25,-122.17 55.83 04/22/2019 20:03:12 68.25,-122.11 55.83 2.37 17
11 04/22/2019 20:54:01 -67.62, 45.94 124.83 04/22/2019 20:52:50 -67.70, 44.88 124.73 45.56 71
12 04/25/2019 11:29:40 -68.31,-173.79 124.99 04/25/2019 11:30:19 -68.32,-173.81 124.98 1.67 39
13 04/25/2019 12:20:24 68.20, -6.34 54.89 04/25/2019 12:19:46 68.21, -6.30 54.90 2.08 38
14 04/28/2019 02:56:06 69.01, 133.73 54.87 04/28/2019 02:57:15 68.94, 135.17 54.80 58.12 69

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 4/14/2019
SNOs_Map_NPP_TERRA_20190414.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 04/14/2019 in txt file.

Historical Predictions of SNOs between NPP and TERRA

NCC Satellite Simultaneous Nadir Overpasses (SNOs) Prediction Service