Path of the Annular Solar Eclipse of 1977 Apr 18
Fred Espenak
Introduction
The following table delineates the path of the Moon's antumbral shadow during the Annular Solar Eclipse of 1977 Apr 18 . The geographic coordinates (WGS 84) of the northern and southern limits and the central line are listed at 120-second intervals. This provides adequate detail for making plots of the path on larger scale maps. Local circumstances on the central line include the ratio of the apparent diameters of the Moon to the Sun, the Sun's altitude and azimuth (degrees), the path width (kilometers) and the duration on the central line (minutes and seconds). See the Explanation of the Central Eclipse Path Table for a description of each column in the table.
The geographic visibility of the eclipse is shown on a global map on the Prime Page for the Eclipse which also includes complete details on the eclipse. The path of the eclipse is displayed in greater detail on an interactive Google Map .
| Annular Solar Eclipse of 1977 Apr 18 | |||||||||||
| UT1 | Northern Limit | Southern Limit | Central Line | M:S | Sun | Sun | Path | Central | |||
| Latitude | Longitude | Latitude | Longitude | Latitude | Longitude | Ratio | Alt. | Azm. | Width | Duration | |
| Limits | 36°51.3'S | 032°28.7'W | 39°17.1'S | 032°07.6'W | 38°03.9'S | 032°18.2'W | 0.932 | 0° | - | 269 km | 04m52.7s |
| 08:44 | 34°32.1'S | 022°00.1'W | 38°39.9'S | 029°07.7'W | 36°17.2'S | 024°09.6'W | 0.933 | 7° | 71° | 260 km | 05m02.3s |
| 08:46 | 33°16.2'S | 017°20.8'W | 36°22.0'S | 019°45.3'W | 34°45.4'S | 018°20.7'W | 0.935 | 12° | 67° | 253 km | 05m10.5s |
| 08:48 | 32°16.2'S | 014°01.8'W | 35°05.8'S | 015°24.8'W | 33°38.7'S | 014°37.1'W | 0.936 | 16° | 65° | 249 km | 05m16.4s |
| 08:50 | 31°24.1'S | 011°22.1'W | 34°04.2'S | 012°13.3'W | 32°42.4'S | 011°43.8'W | 0.936 | 19° | 63° | 245 km | 05m21.5s |
| 08:52 | 30°37.2'S | 009°06.9'W | 33°10.5'S | 009°38.0'W | 31°52.4'S | 009°19.6'W | 0.937 | 21° | 61° | 242 km | 05m26.0s |
| 08:54 | 29°53.8'S | 007°08.7'W | 32°21.9'S | 007°25.6'W | 31°06.6'S | 007°15.0'W | 0.938 | 24° | 60° | 240 km | 05m30.1s |
| 08:56 | 29°13.2'S | 005°23.2'W | 31°37.1'S | 005°29.5'W | 30°24.1'S | 005°24.6'W | 0.938 | 26° | 58° | 238 km | 05m34.0s |
| 08:58 | 28°34.8'S | 003°47.6'W | 30°55.1'S | 003°45.7'W | 29°44.0'S | 003°45.2'W | 0.939 | 28° | 57° | 236 km | 05m37.7s |
| 09:00 | 27°58.3'S | 002°20.0'W | 30°15.5'S | 002°11.4'W | 29°06.0'S | 002°14.5'W | 0.939 | 30° | 56° | 234 km | 05m41.2s |
| 09:02 | 27°23.4'S | 000°59.1'W | 29°37.8'S | 000°45.0'W | 28°29.8'S | 000°51.0'W | 0.939 | 31° | 55° | 232 km | 05m44.5s |
| 09:04 | 26°49.8'S | 000°16.3'E | 29°01.7'S | 000°35.0'E | 27°55.0'S | 000°26.5'E | 0.940 | 33° | 53° | 231 km | 05m47.8s |
| 09:06 | 26°17.3'S | 001°26.9'E | 28°27.1'S | 001°49.5'E | 27°21.5'S | 001°38.9'E | 0.940 | 34° | 52° | 230 km | 05m50.9s |
| 09:08 | 25°46.0'S | 002°33.3'E | 27°53.7'S | 002°59.3'E | 26°49.2'S | 002°47.0'E | 0.940 | 36° | 51° | 228 km | 05m53.9s |
| 09:10 | 25°15.5'S | 003°36.1'E | 27°21.5'S | 004°05.0'E | 26°17.9'S | 003°51.1'E | 0.941 | 37° | 50° | 227 km | 05m56.9s |
| 09:12 | 24°45.9'S | 004°35.7'E | 26°50.2'S | 005°07.2'E | 25°47.5'S | 004°52.0'E | 0.941 | 39° | 49° | 226 km | 05m59.8s |
| 09:14 | 24°17.2'S | 005°32.4'E | 26°19.9'S | 006°06.2'E | 25°17.9'S | 005°49.8'E | 0.941 | 40° | 48° | 225 km | 06m02.5s |
| 09:16 | 23°49.1'S | 006°26.6'E | 25°50.4'S | 007°02.4'E | 24°49.2'S | 006°44.9'E | 0.941 | 41° | 47° | 224 km | 06m05.3s |
| 09:18 | 23°21.7'S | 007°18.4'E | 25°21.6'S | 007°56.1'E | 24°21.1'S | 007°37.6'E | 0.942 | 42° | 46° | 223 km | 06m07.9s |
| 09:20 | 22°54.9'S | 008°08.2'E | 24°53.6'S | 008°47.4'E | 23°53.7'S | 008°28.2'E | 0.942 | 44° | 45° | 222 km | 06m10.5s |
| 09:22 | 22°28.6'S | 008°56.1'E | 24°26.3'S | 009°36.8'E | 23°26.9'S | 009°16.8'E | 0.942 | 45° | 44° | 222 km | 06m13.0s |
| 09:24 | 22°03.0'S | 009°42.3'E | 23°59.5'S | 010°24.3'E | 23°00.7'S | 010°03.5'E | 0.942 | 46° | 43° | 221 km | 06m15.5s |
| 09:26 | 21°37.8'S | 010°26.8'E | 23°33.4'S | 011°10.0'E | 22°35.1'S | 010°48.7'E | 0.942 | 47° | 42° | 220 km | 06m17.9s |
| 09:28 | 21°13.1'S | 011°10.0'E | 23°07.8'S | 011°54.2'E | 22°10.0'S | 011°32.3'E | 0.943 | 48° | 41° | 220 km | 06m20.2s |
| 09:30 | 20°48.9'S | 011°51.8'E | 22°42.7'S | 012°37.0'E | 21°45.3'S | 012°14.6'E | 0.943 | 49° | 40° | 219 km | 06m22.5s |
| 09:32 | 20°25.1'S | 012°32.3'E | 22°18.1'S | 013°18.5'E | 21°21.1'S | 012°55.6'E | 0.943 | 50° | 38° | 219 km | 06m24.8s |
| 09:34 | 20°01.7'S | 013°11.7'E | 21°53.9'S | 013°58.7'E | 20°57.4'S | 013°35.4'E | 0.943 | 51° | 37° | 218 km | 06m27.0s |
| 09:36 | 19°38.7'S | 013°50.1'E | 21°30.2'S | 014°37.9'E | 20°34.0'S | 014°14.1'E | 0.943 | 52° | 36° | 218 km | 06m29.1s |
| 09:38 | 19°16.1'S | 014°27.5'E | 21°07.0'S | 015°16.0'E | 20°11.1'S | 014°51.9'E | 0.943 | 53° | 35° | 218 km | 06m31.2s |
| 09:40 | 18°53.8'S | 015°04.0'E | 20°44.1'S | 015°53.1'E | 19°48.5'S | 015°28.7'E | 0.943 | 54° | 34° | 217 km | 06m33.2s |
| 09:42 | 18°31.9'S | 015°39.7'E | 20°21.7'S | 016°29.4'E | 19°26.4'S | 016°04.7'E | 0.944 | 55° | 32° | 217 km | 06m35.1s |
| 09:44 | 18°10.3'S | 016°14.6'E | 19°59.6'S | 017°04.8'E | 19°04.5'S | 016°39.8'E | 0.944 | 56° | 31° | 217 km | 06m37.0s |
| 09:46 | 17°49.1'S | 016°48.8'E | 19°37.9'S | 017°39.5'E | 18°43.1'S | 017°14.3'E | 0.944 | 56° | 30° | 217 km | 06m38.9s |
| 09:48 | 17°28.2'S | 017°22.3'E | 19°16.5'S | 018°13.5'E | 18°21.9'S | 017°48.0'E | 0.944 | 57° | 28° | 216 km | 06m40.7s |
| 09:50 | 17°07.5'S | 017°55.2'E | 18°55.5'S | 018°46.8'E | 18°01.1'S | 018°21.1'E | 0.944 | 58° | 27° | 216 km | 06m42.4s |
| 09:52 | 16°47.2'S | 018°27.6'E | 18°34.8'S | 019°19.6'E | 17°40.6'S | 018°53.6'E | 0.944 | 59° | 25° | 216 km | 06m44.1s |
| 09:54 | 16°27.1'S | 018°59.4'E | 18°14.4'S | 019°51.8'E | 17°20.4'S | 019°25.6'E | 0.944 | 59° | 24° | 216 km | 06m45.7s |
| 09:56 | 16°07.4'S | 019°30.7'E | 17°54.3'S | 020°23.4'E | 17°00.5'S | 019°57.1'E | 0.944 | 60° | 22° | 216 km | 06m47.3s |
| 09:58 | 15°47.9'S | 020°01.5'E | 17°34.6'S | 020°54.6'E | 16°40.8'S | 020°28.1'E | 0.944 | 61° | 20° | 216 km | 06m48.8s |
| 10:00 | 15°28.6'S | 020°32.0'E | 17°15.1'S | 021°25.3'E | 16°21.5'S | 020°58.7'E | 0.944 | 61° | 18° | 216 km | 06m50.2s |
| 10:02 | 15°09.7'S | 021°02.1'E | 16°56.0'S | 021°55.7'E | 16°02.4'S | 021°28.9'E | 0.945 | 62° | 17° | 216 km | 06m51.6s |
| 10:04 | 14°51.0'S | 021°31.8'E | 16°37.1'S | 022°25.7'E | 15°43.6'S | 021°58.8'E | 0.945 | 63° | 15° | 216 km | 06m53.0s |
| 10:06 | 14°32.5'S | 022°01.2'E | 16°18.5'S | 022°55.3'E | 15°25.1'S | 022°28.3'E | 0.945 | 63° | 13° | 217 km | 06m54.2s |
| 10:08 | 14°14.3'S | 022°30.3'E | 16°00.1'S | 023°24.6'E | 15°06.8'S | 022°57.5'E | 0.945 | 64° | 11° | 217 km | 06m55.4s |
| 10:10 | 13°56.3'S | 022°59.2'E | 15°42.1'S | 023°53.7'E | 14°48.8'S | 023°26.4'E | 0.945 | 64° | 9° | 217 km | 06m56.5s |
| 10:12 | 13°38.6'S | 023°27.8'E | 15°24.3'S | 024°22.5'E | 14°31.0'S | 023°55.2'E | 0.945 | 64° | 7° | 217 km | 06m57.6s |
| 10:14 | 13°21.0'S | 023°56.2'E | 15°06.7'S | 024°51.1'E | 14°13.5'S | 024°23.6'E | 0.945 | 65° | 4° | 217 km | 06m58.6s |
| 10:16 | 13°03.8'S | 024°24.4'E | 14°49.4'S | 025°19.5'E | 13°56.2'S | 024°52.0'E | 0.945 | 65° | 2° | 218 km | 06m59.5s |
| 10:18 | 12°46.7'S | 024°52.5'E | 14°32.4'S | 025°47.7'E | 13°39.2'S | 025°20.1'E | 0.945 | 65° | 0° | 218 km | 07m00.4s |
| 10:20 | 12°29.9'S | 025°20.5'E | 14°15.6'S | 026°15.8'E | 13°22.3'S | 025°48.1'E | 0.945 | 66° | 358° | 218 km | 07m01.2s |
| 10:22 | 12°13.3'S | 025°48.3'E | 13°59.1'S | 026°43.7'E | 13°05.8'S | 026°16.0'E | 0.945 | 66° | 355° | 219 km | 07m01.9s |
| 10:24 | 11°56.9'S | 026°16.1'E | 13°42.8'S | 027°11.6'E | 12°49.4'S | 026°43.8'E | 0.945 | 66° | 353° | 219 km | 07m02.6s |
| 10:26 | 11°40.7'S | 026°43.7'E | 13°26.7'S | 027°39.4'E | 12°33.3'S | 027°11.6'E | 0.945 | 66° | 351° | 219 km | 07m03.1s |
| 10:28 | 11°24.8'S | 027°11.4'E | 13°10.9'S | 028°07.1'E | 12°17.4'S | 027°39.2'E | 0.945 | 66° | 348° | 220 km | 07m03.6s |
| 10:30 | 11°09.0'S | 027°39.0'E | 12°55.3'S | 028°34.8'E | 12°01.8'S | 028°06.9'E | 0.945 | 66° | 346° | 220 km | 07m04.1s |
| 10:32 | 10°53.5'S | 028°06.7'E | 12°40.0'S | 029°02.5'E | 11°46.3'S | 028°34.6'E | 0.945 | 66° | 343° | 221 km | 07m04.4s |
| 10:34 | 10°38.2'S | 028°34.3'E | 12°24.9'S | 029°30.3'E | 11°31.1'S | 029°02.3'E | 0.945 | 66° | 341° | 221 km | 07m04.7s |
| 10:36 | 10°23.1'S | 029°02.0'E | 12°10.0'S | 029°58.0'E | 11°16.2'S | 029°30.0'E | 0.945 | 66° | 338° | 222 km | 07m04.9s |
| 10:38 | 10°08.3'S | 029°29.8'E | 11°55.3'S | 030°25.9'E | 11°01.4'S | 029°57.8'E | 0.945 | 66° | 336° | 222 km | 07m05.0s |
| 10:40 | 09°53.6'S | 029°57.6'E | 11°40.9'S | 030°53.8'E | 10°46.9'S | 030°25.7'E | 0.945 | 66° | 334° | 223 km | 07m05.0s |
| 10:42 | 09°39.1'S | 030°25.6'E | 11°26.8'S | 031°21.8'E | 10°32.5'S | 030°53.7'E | 0.945 | 66° | 331° | 223 km | 07m04.9s |
| 10:44 | 09°24.9'S | 030°53.7'E | 11°12.8'S | 031°50.0'E | 10°18.5'S | 031°21.8'E | 0.945 | 65° | 329° | 224 km | 07m04.8s |
| 10:46 | 09°10.9'S | 031°22.0'E | 10°59.1'S | 032°18.3'E | 10°04.6'S | 031°50.1'E | 0.945 | 65° | 327° | 224 km | 07m04.6s |
| 10:48 | 08°57.1'S | 031°50.4'E | 10°45.6'S | 032°46.8'E | 09°51.0'S | 032°18.5'E | 0.945 | 65° | 325° | 225 km | 07m04.3s |
| 10:50 | 08°43.5'S | 032°19.1'E | 10°32.4'S | 033°15.5'E | 09°37.5'S | 032°47.2'E | 0.945 | 64° | 323° | 225 km | 07m03.9s |
| 10:52 | 08°30.2'S | 032°47.9'E | 10°19.4'S | 033°44.4'E | 09°24.4'S | 033°16.1'E | 0.945 | 64° | 321° | 226 km | 07m03.4s |
| 10:54 | 08°17.0'S | 033°17.1'E | 10°06.6'S | 034°13.6'E | 09°11.4'S | 033°45.2'E | 0.945 | 63° | 319° | 227 km | 07m02.9s |
| 10:56 | 08°04.1'S | 033°46.5'E | 09°54.1'S | 034°43.0'E | 08°58.7'S | 034°14.7'E | 0.944 | 63° | 317° | 227 km | 07m02.2s |
| 10:58 | 07°51.4'S | 034°16.2'E | 09°41.8'S | 035°12.8'E | 08°46.2'S | 034°44.4'E | 0.944 | 62° | 315° | 228 km | 07m01.5s |
| 11:00 | 07°39.0'S | 034°46.2'E | 09°29.8'S | 035°42.8'E | 08°34.0'S | 035°14.4'E | 0.944 | 62° | 313° | 228 km | 07m00.7s |
| 11:02 | 07°26.7'S | 035°16.6'E | 09°18.0'S | 036°13.3'E | 08°22.0'S | 035°44.8'E | 0.944 | 61° | 312° | 229 km | 06m59.8s |
| 11:04 | 07°14.7'S | 035°47.4'E | 09°06.5'S | 036°44.1'E | 08°10.2'S | 036°15.6'E | 0.944 | 61° | 310° | 229 km | 06m58.8s |
| 11:06 | 07°03.0'S | 036°18.5'E | 08°55.2'S | 037°15.4'E | 07°58.7'S | 036°46.8'E | 0.944 | 60° | 309° | 230 km | 06m57.7s |
| 11:08 | 06°51.5'S | 036°50.2'E | 08°44.2'S | 037°47.1'E | 07°47.4'S | 037°18.5'E | 0.944 | 59° | 307° | 231 km | 06m56.5s |
| 11:10 | 06°40.2'S | 037°22.3'E | 08°33.5'S | 038°19.3'E | 07°36.4'S | 037°50.7'E | 0.944 | 59° | 306° | 231 km | 06m55.3s |
| 11:12 | 06°29.2'S | 037°54.9'E | 08°23.0'S | 038°52.0'E | 07°25.7'S | 038°23.3'E | 0.944 | 58° | 304° | 232 km | 06m53.9s |
| 11:14 | 06°18.4'S | 038°28.1'E | 08°12.8'S | 039°25.3'E | 07°15.2'S | 038°56.6'E | 0.944 | 57° | 303° | 232 km | 06m52.5s |
| 11:16 | 06°08.0'S | 039°01.9'E | 08°02.9'S | 039°59.2'E | 07°05.0'S | 039°30.4'E | 0.944 | 56° | 302° | 233 km | 06m50.9s |
| 11:18 | 05°57.8'S | 039°36.3'E | 07°53.3'S | 040°33.8'E | 06°55.1'S | 040°04.9'E | 0.943 | 55° | 301° | 234 km | 06m49.3s |
| 11:20 | 05°47.8'S | 040°11.4'E | 07°44.0'S | 041°09.0'E | 06°45.5'S | 040°40.0'E | 0.943 | 55° | 300° | 234 km | 06m47.6s |
| 11:22 | 05°38.2'S | 040°47.2'E | 07°35.0'S | 041°45.0'E | 06°36.2'S | 041°15.9'E | 0.943 | 54° | 299° | 235 km | 06m45.8s |
| 11:24 | 05°28.8'S | 041°23.9'E | 07°26.3'S | 042°21.8'E | 06°27.1'S | 041°52.6'E | 0.943 | 53° | 298° | 235 km | 06m43.9s |
| 11:26 | 05°19.8'S | 042°01.3'E | 07°18.0'S | 042°59.5'E | 06°18.5'S | 042°30.2'E | 0.943 | 52° | 297° | 236 km | 06m42.0s |
| 11:28 | 05°11.1'S | 042°39.7'E | 07°10.0'S | 043°38.1'E | 06°10.1'S | 043°08.6'E | 0.943 | 51° | 296° | 236 km | 06m39.9s |
| 11:30 | 05°02.7'S | 043°19.0'E | 07°02.3'S | 044°17.8'E | 06°02.1'S | 043°48.1'E | 0.942 | 50° | 295° | 237 km | 06m37.8s |
| 11:32 | 04°54.7'S | 043°59.3'E | 06°55.0'S | 044°58.5'E | 05°54.4'S | 044°28.6'E | 0.942 | 49° | 294° | 238 km | 06m35.5s |
| 11:34 | 04°47.0'S | 044°40.8'E | 06°48.1'S | 045°40.3'E | 05°47.1'S | 045°10.3'E | 0.942 | 48° | 293° | 238 km | 06m33.2s |
| 11:36 | 04°39.7'S | 045°23.5'E | 06°41.6'S | 046°23.5'E | 05°40.2'S | 045°53.2'E | 0.942 | 47° | 293° | 239 km | 06m30.8s |
| 11:38 | 04°32.8'S | 046°07.5'E | 06°35.6'S | 047°08.0'E | 05°33.8'S | 046°37.4'E | 0.942 | 46° | 292° | 239 km | 06m28.3s |
| 11:40 | 04°26.3'S | 046°52.9'E | 06°30.0'S | 047°54.0'E | 05°27.7'S | 047°23.1'E | 0.942 | 45° | 291° | 240 km | 06m25.7s |
| 11:42 | 04°20.3'S | 047°39.9'E | 06°24.9'S | 048°41.7'E | 05°22.1'S | 048°10.4'E | 0.941 | 43° | 290° | 241 km | 06m23.0s |
| 11:44 | 04°14.8'S | 048°28.6'E | 06°20.3'S | 049°31.1'E | 05°17.0'S | 048°59.4'E | 0.941 | 42° | 290° | 241 km | 06m20.2s |
| 11:46 | 04°09.7'S | 049°19.1'E | 06°16.3'S | 050°22.5'E | 05°12.5'S | 049°50.3'E | 0.941 | 41° | 289° | 242 km | 06m17.3s |
| 11:48 | 04°05.2'S | 050°11.6'E | 06°12.8'S | 051°16.1'E | 05°08.5'S | 050°43.3'E | 0.941 | 40° | 289° | 243 km | 06m14.3s |
| 11:50 | 04°01.3'S | 051°06.4'E | 06°10.0'S | 052°12.1'E | 05°05.1'S | 051°38.7'E | 0.940 | 38° | 288° | 243 km | 06m11.2s |
| 11:52 | 03°58.0'S | 052°03.7'E | 06°07.9'S | 053°10.8'E | 05°02.4'S | 052°36.6'E | 0.940 | 37° | 288° | 244 km | 06m08.0s |
| 11:54 | 03°55.4'S | 053°03.9'E | 06°06.6'S | 054°12.6'E | 05°00.4'S | 053°37.5'E | 0.940 | 36° | 287° | 245 km | 06m04.7s |
| 11:56 | 03°53.5'S | 054°07.1'E | 06°06.2'S | 055°17.9'E | 04°59.3'S | 054°41.7'E | 0.939 | 34° | 287° | 246 km | 06m01.3s |
| 11:58 | 03°52.5'S | 055°14.0'E | 06°06.7'S | 056°27.1'E | 04°59.0'S | 055°49.7'E | 0.939 | 33° | 286° | 247 km | 05m57.7s |
| 12:00 | 03°52.5'S | 056°25.1'E | 06°08.3'S | 057°41.0'E | 04°59.8'S | 057°02.0'E | 0.939 | 31° | 286° | 248 km | 05m54.0s |
| 12:02 | 03°53.6'S | 057°41.0'E | 06°11.3'S | 059°00.4'E | 05°01.8'S | 058°19.5'E | 0.938 | 29° | 285° | 249 km | 05m50.2s |
| 12:04 | 03°55.9'S | 059°02.6'E | 06°15.7'S | 060°26.5'E | 05°05.1'S | 059°43.2'E | 0.938 | 27° | 285° | 250 km | 05m46.1s |
| 12:06 | 03°59.8'S | 060°31.2'E | 06°22.0'S | 062°00.7'E | 05°10.1'S | 061°14.3'E | 0.937 | 25° | 285° | 251 km | 05m41.9s |
| 12:08 | 04°05.5'S | 062°08.4'E | 06°30.6'S | 063°45.4'E | 05°17.2'S | 062°54.9'E | 0.937 | 23° | 284° | 253 km | 05m37.4s |
| 12:10 | 04°13.5'S | 063°56.8'E | 06°42.2'S | 065°44.1'E | 05°26.9'S | 064°47.9'E | 0.936 | 21° | 284° | 254 km | 05m32.5s |
| 12:12 | 04°24.6'S | 066°00.2'E | 06°58.1'S | 068°03.0'E | 05°40.1'S | 066°58.0'E | 0.936 | 18° | 283° | 256 km | 05m27.3s |
| 12:14 | 04°40.1'S | 068°25.5'E | 07°20.8'S | 070°54.3'E | 05°58.8'S | 069°34.4'E | 0.935 | 15° | 283° | 259 km | 05m21.3s |
| 12:16 | 05°02.8'S | 071°27.4'E | 07°57.1'S | 074°52.7'E | 06°26.9'S | 072°58.0'E | 0.934 | 11° | 282° | 262 km | 05m14.2s |
| 12:18 | 05°41.4'S | 075°51.2'E | - | - | 07°23.1'S | 078°44.2'E | 0.932 | 5° | 282° | 267 km | 05m03.6s |
| Limits | 07°02.8'S | 083°38.8'E | 09°32.1'S | 083°33.9'E | 08°17.1'S | 083°36.1'E | 0.931 | 0° | - | 272 km | 04m55.9s |
ΔT = 47.9 seconds
| Greatest Eclipse and Greatest Duration | ||||||||
| Event | Time TD |
Time UT1 |
Latitude | Longitude | Sun Altitude |
Sun Azimuth |
Path Width | Central Duration |
| Greatest Eclipse | 10:31:29.9 | 10:30:42.0 | 11°56.3'S | 028°04.6'E | 66.4° | 344.8° | 220.4 km | 07m04.18s |
| Greatest Duration | 10:40:30.0 | 10:39:42.2 | 10°49.0'S | 030°21.5'E | 66.0° | 334.1° | 222.6 km | 07m04.99s |
Links for the Annular Solar Eclipse of 1977 Apr 18
Links to Additional Solar Eclipse Predictions
- Home - home page of EclipseWise with predictions for both solar and lunar eclipses
- Solar Eclipses - primary page for solar eclipse predictions
- Solar Eclipse Links - detailed directory of links
- Thousand Year Canon of Solar Eclipses 1501 to 2500 - link to the publication
Eclipse Predictions
Predictions for the Annular Solar Eclipse of 1977 Apr 18 were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates were calculated with respect to the Moon's Center of Mass. Although the predictions are first calculated in Terrestrial Dynamical Time (TD), they are then converted to Universal Time (UT1) as presented here. The parameter ΔT is used to convert between the two times (i.e., UT1 = TD - ΔT). ΔT has a value of 47.9 seconds for this eclipse.
Acknowledgments
Some of the content on this website is based on the book Thousand Year Canon of Solar Eclipses 1501 to 2500. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.
Permission is granted to reproduce eclipse data when accompanied by a link to this page and an acknowledgment:
"Eclipse Predictions by Fred Espenak, EclipseWise.com"
The use of diagrams and maps is permitted provided that they are unaltered (except for re-sizing) and the embedded credit line is not removed or covered.