Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and FY3D TLE Epoch: 2025 10 10. Predictions up to the next 14.0 days: Date Time(NOAA-21) NOAA-21 Lat/Lon Date Time(FY3D) FY3D Lat/Lon Distance(km) Time Diff(sec) 10/21/2025 09:21:46 ( 81.00, -14.05) 10/21/2025 09:22:51 ( 80.96, -9.98) 71.06 65 10/21/2025 11:03:12 ( 80.96, -38.40) 10/21/2025 11:04:22 ( 80.93, -36.32) 36.52 70 10/21/2025 12:44:39 ( 80.91, -62.76) 10/21/2025 12:45:54 ( 80.90, -62.65) 2.26 75 10/21/2025 13:35:31 ( -81.03, 101.79) 10/21/2025 13:36:33 ( -80.97, 107.13) 93.07 62 10/21/2025 14:26:08 ( 80.90, -87.85) 10/21/2025 14:27:23 ( 80.91, -87.87) 0.86 75 10/21/2025 15:16:57 ( -80.98, 77.81) 10/21/2025 15:18:06 ( -80.94, 80.42) 45.90 69 10/21/2025 16:07:38 ( 80.90,-113.30) 10/21/2025 16:08:53 ( 80.90,-113.46) 2.92 75 10/21/2025 16:58:24 ( -80.93, 53.45) 10/21/2025 16:59:38 ( -80.91, 54.09) 11.61 74 10/21/2025 17:49:08 ( 80.91,-138.75) 10/21/2025 17:50:22 ( 80.91,-138.68) 1.19 74 10/21/2025 18:39:52 ( -80.90, 28.72) 10/21/2025 18:41:07 ( -80.91, 28.87) 3.04 75 10/21/2025 19:30:38 ( 80.91,-164.20) 10/21/2025 19:31:52 ( 80.90,-164.27) 1.94 74 10/21/2025 20:21:22 ( -80.90, 3.27) 10/21/2025 20:22:37 ( -80.91, 3.29) 0.35 75 10/21/2025 21:12:08 ( 80.92, 170.35) 10/21/2025 21:13:21 ( 80.90, 170.51) 3.04 73 10/21/2025 22:02:52 ( -80.91, -22.18) 10/21/2025 22:04:07 ( -80.90, -22.30) 2.37 75 10/21/2025 22:53:37 ( 80.90, 145.26) 10/21/2025 22:54:50 ( 80.91, 145.29) 0.82 73 10/21/2025 23:44:22 ( -80.91, -47.63) 10/21/2025 23:45:36 ( -80.90, -47.52) 1.99 74 10/22/2025 00:35:07 ( 80.91, 119.81) 10/22/2025 00:36:20 ( 80.90, 119.70) 2.07 73 10/22/2025 01:25:51 ( -80.90, -72.72) 10/22/2025 01:27:05 ( -80.91, -72.74) 1.31 74 10/22/2025 02:16:37 ( 80.91, 94.36) 10/22/2025 02:17:49 ( 80.91, 94.48) 2.05 72 10/22/2025 03:07:21 ( -80.90, -98.17) 10/22/2025 03:08:35 ( -80.90, -98.33) 2.92 74 10/22/2025 03:58:07 ( 80.91, 68.91) 10/22/2025 03:59:19 ( 80.90, 68.89) 1.55 72 10/22/2025 04:48:51 ( -80.90,-123.61) 10/22/2025 04:50:04 ( -80.91,-123.55) 1.12 73 10/22/2025 05:39:36 ( 80.90, 43.82) 10/22/2025 05:40:48 ( 80.90, 43.67) 2.79 72 10/22/2025 06:30:21 ( -80.91,-149.06) 10/22/2025 06:31:34 ( -80.90,-149.14) 1.64 73 10/22/2025 07:21:06 ( 80.90, 18.37) 10/22/2025 07:22:17 ( 80.91, 18.45) 1.45 71 10/22/2025 08:11:51 ( -80.91,-174.51) 10/22/2025 08:13:03 ( -80.90,-174.36) 2.79 72 10/22/2025 09:02:36 ( 80.91, -7.08) 10/22/2025 09:03:47 ( 80.90, -7.14) 1.26 71 10/22/2025 09:53:20 ( -80.90, 160.40) 10/22/2025 09:54:32 ( -80.91, 160.42) 1.25 72 10/22/2025 10:44:06 ( 80.91, -32.53) 10/22/2025 10:45:16 ( 80.91, -32.36) 2.92 70 10/22/2025 11:34:50 ( -80.90, 134.95) 10/22/2025 11:36:02 ( -80.90, 134.83) 2.08 72 10/22/2025 12:25:36 ( 80.91, -57.98) 10/22/2025 12:26:46 ( 80.90, -57.95) 1.61 70 10/22/2025 13:16:20 ( -80.91, 109.50) 10/22/2025 13:17:31 ( -80.91, 109.61) 1.94 71 10/22/2025 14:07:05 ( 80.90, -83.07) 10/22/2025 14:08:15 ( 80.90, -83.17) 1.93 70 10/22/2025 14:57:50 ( -80.91, 84.05) 10/22/2025 14:59:01 ( -80.90, 84.02) 1.09 71 10/22/2025 15:48:35 ( 80.90,-108.52) 10/22/2025 15:49:44 ( 80.91,-108.39) 2.25 69 10/22/2025 16:39:19 ( -80.90, 58.96) 10/22/2025 16:40:30 ( -80.91, 58.80) 3.00 71 10/22/2025 17:30:05 ( 80.91,-133.97) 10/22/2025 17:31:14 ( 80.90,-133.98) 0.64 69 10/22/2025 18:20:49 ( -80.90, 33.51) 10/22/2025 18:21:59 ( -80.91, 33.58) 1.67 70 10/22/2025 19:11:34 ( 80.89,-159.06) 10/22/2025 19:12:43 ( 80.91,-159.20) 2.95 69 10/22/2025 20:02:19 ( -80.90, 8.06) 10/22/2025 20:03:29 ( -80.90, 7.99) 1.25 70 10/22/2025 20:53:05 ( 80.91, 175.13) 10/22/2025 20:54:13 ( 80.90, 175.21) 2.08 68 10/22/2025 21:43:49 ( -80.91, -17.39) 10/22/2025 21:44:58 ( -80.91, -17.23) 2.78 69 10/22/2025 22:34:34 ( 80.90, 150.04) 10/22/2025 22:35:42 ( 80.90, 149.99) 1.07 68 10/22/2025 23:25:19 ( -80.91, -42.84) 10/22/2025 23:26:28 ( -80.90, -42.82) 1.06 69 10/23/2025 00:16:04 ( 80.90, 124.59) 10/23/2025 00:17:11 ( 80.91, 124.77) 3.09 67 10/23/2025 01:06:48 ( -80.90, -67.93) 10/23/2025 01:07:57 ( -80.91, -68.04) 2.21 69 10/23/2025 01:57:34 ( 80.91, 99.14) 10/23/2025 01:58:41 ( 80.90, 99.17) 0.88 67 10/23/2025 02:48:18 ( -80.90, -93.37) 10/23/2025 02:49:26 ( -80.91, -93.26) 2.33 68 10/23/2025 03:39:03 ( 80.89, 74.05) 10/23/2025 03:40:10 ( 80.91, 73.95) 2.18 67 10/23/2025 04:29:48 ( -80.90,-118.82) 10/23/2025 04:30:56 ( -80.90,-118.85) 0.41 68 10/23/2025 05:20:33 ( 80.90, 48.60) 10/23/2025 05:21:39 ( 80.91, 48.73) 2.76 66 10/23/2025 06:11:18 ( -80.91,-144.27) 10/23/2025 06:12:26 ( -80.90,-144.44) 3.10 68 10/23/2025 07:02:03 ( 80.90, 23.15) 10/23/2025 07:03:09 ( 80.90, 23.14) 0.33 66 10/23/2025 07:52:48 ( -80.91,-169.72) 10/23/2025 07:53:55 ( -80.90,-169.66) 1.57 67 10/23/2025 08:43:33 ( 80.91, -2.30) 10/23/2025 08:44:39 ( 80.90, -2.45) 2.72 66 10/23/2025 09:34:17 ( -80.90, 165.19) 10/23/2025 09:35:24 ( -80.91, 165.12) 1.48 67 10/23/2025 10:25:03 ( 80.91, -27.75) 10/23/2025 10:26:08 ( 80.90, -27.67) 1.64 65 10/23/2025 11:15:47 ( -80.90, 139.74) 10/23/2025 11:16:53 ( -80.91, 139.90) 3.07 66 10/23/2025 12:06:32 ( 80.90, -52.84) 10/23/2025 12:07:37 ( 80.91, -52.89) 1.52 65 10/23/2025 12:57:17 ( -80.90, 114.29) 10/23/2025 12:58:23 ( -80.90, 114.31) 0.44 66 10/23/2025 13:48:02 ( 80.90, -78.29) 10/23/2025 13:49:07 ( 80.90, -78.48) 3.29 65 10/23/2025 14:38:46 ( -80.91, 88.84) 10/23/2025 14:39:52 ( -80.90, 88.72) 2.37 66 10/23/2025 15:29:31 ( 80.90,-103.74) 10/23/2025 15:30:35 ( 80.90,-103.70) 0.78 64 10/23/2025 16:20:16 ( -80.91, 63.39) 10/23/2025 16:21:21 ( -80.90, 63.50) 2.29 65 10/23/2025 17:11:01 ( 80.91,-129.19) 10/23/2025 17:12:05 ( 80.90,-129.29) 1.94 64 10/23/2025 18:01:45 ( -80.90, 38.30) 10/23/2025 18:02:50 ( -80.91, 38.28) 0.93 65 10/23/2025 18:52:31 ( 80.91,-154.64) 10/23/2025 18:53:34 ( 80.90,-154.51) 2.49 63 10/23/2025 19:43:15 ( -80.90, 12.85) 10/23/2025 19:44:20 ( -80.90, 12.69) 2.77 65 10/23/2025 20:34:00 ( 80.90,-179.73) 10/23/2025 20:35:03 ( 80.91,-179.73) 1.18 63 10/23/2025 21:24:45 ( -80.91, -12.60) 10/23/2025 21:25:49 ( -80.90, -12.53) 1.27 64 10/23/2025 22:15:30 ( 80.90, 154.81) 10/23/2025 22:16:33 ( 80.90, 154.68) 2.41 63 10/23/2025 23:06:15 ( -80.91, -38.05) 10/23/2025 23:07:19 ( -80.90, -38.12) 1.77 64 10/23/2025 23:57:00 ( 80.90, 129.36) 10/23/2025 23:58:02 ( 80.91, 129.46) 1.64 62 10/24/2025 00:47:45 ( -80.91, -63.50) 10/24/2025 00:48:48 ( -80.90, -63.34) 3.07 63 10/24/2025 01:38:30 ( 80.91, 103.91) 10/24/2025 01:39:32 ( 80.90, 103.87) 1.33 62 10/24/2025 02:29:14 ( -80.90, -88.59) 10/24/2025 02:30:17 ( -80.91, -88.56) 0.97 63