Calculated solar events · fixed geographic point
Heard Island sunrise and sunset — Atlas Cove
Calculate apparent sunrise and sunset at Atlas Cove on Heard Island: -53.02311°, 73.38611°. Times use UTC and retain the full event date.
Read the event date as well as the clock. A solar day is labelled by the UTC date containing its solar noon. In the brighter months, sunrise occurs on the preceding UTC date. UTC is a display reference, not an assertion of an official local civil time zone.
Solar day 2026-10-26
Apparent sunrise
Apparent sunset
Approximate daylight
14 h 28 min
2026-10 · UTC event dates
| Solar day label | Sunrise UTC | Sunset UTC | Approximate daylight |
|---|---|---|---|
| 2026-10-01 | 12 h 45 min | ||
| 2026-10-02 | 12 h 49 min | ||
| 2026-10-03 | 12 h 54 min | ||
| 2026-10-04 | 12 h 58 min | ||
| 2026-10-05 | 13 h 1 min | ||
| 2026-10-06 | 13 h 6 min | ||
| 2026-10-07 | 13 h 10 min | ||
| 2026-10-08 | 13 h 15 min | ||
| 2026-10-09 | 13 h 19 min | ||
| 2026-10-10 | 13 h 22 min | ||
| 2026-10-11 | 13 h 27 min | ||
| 2026-10-12 | 13 h 31 min | ||
| 2026-10-13 | 13 h 35 min | ||
| 2026-10-14 | 13 h 40 min | ||
| 2026-10-15 | 13 h 44 min | ||
| 2026-10-16 | 13 h 47 min | ||
| 2026-10-17 | 13 h 51 min | ||
| 2026-10-18 | 13 h 56 min | ||
| 2026-10-19 | 14 h 0 min | ||
| 2026-10-20 | 14 h 4 min | ||
| 2026-10-21 | 14 h 8 min | ||
| 2026-10-22 | 14 h 13 min | ||
| 2026-10-23 | 14 h 17 min | ||
| 2026-10-24 | 14 h 20 min | ||
| 2026-10-25 | 14 h 24 min | ||
| 2026-10-26 | 14 h 28 min | ||
| 2026-10-27 | 14 h 32 min | ||
| 2026-10-28 | 14 h 36 min | ||
| 2026-10-29 | 14 h 40 min | ||
| 2026-10-30 | 14 h 45 min | ||
| 2026-10-31 | 14 h 49 min |
Point, calculation and limits
Australian Antarctic Gazetteer record 366 supplies the Atlas Cove point and identifies coordinate precision as unknown. The coordinates are not a settlement, population centre or an average for the whole territory. Geography attribution: Commonwealth of Australia / Australian Antarctic Division, Australian Antarctic Gazetteer, CC BY 4.0; reviewed 2026-10-25.
Contifield calculates these events with Adhan JS 4.4.6, using apparent sunrise and sunset at a standard solar-centre altitude of approximately −0.833°, sea level and an unobstructed horizon, rounded to the nearest minute. The sunrise and sunset values do not use prayer-angle, Asr or high-latitude prayer estimates.
The calculation was compared at 25 dates spanning the supported 2020–2035 range against NOAA’s published Meeus-based solar calculation; differences were within 29 seconds. NOAA states that its web calculator is no longer actively supported. This comparison is a numerical reference, not an official observed timetable or a promise of observational precision.
Terrain, clouds, unusual refraction, observer height and actual visibility are not modeled. The Australian Antarctic Division describes the islands as unoccupied by humans. This page gives a fixed-point astronomical calculation and does not imply settlement coverage.
CSV preserves each full UTC instant and coordinate. ICS includes both sunrise and sunset as timed UTC events; your calendar application controls their display clock. Missing events are shown explicitly and never replaced with zero times. Imported files do not update automatically.