eta-Aquariids from Bangkok in 2026

eta-Aquariids from Bangkok: the short answer

For Bangkok, eta-Aquariids maximum lands at 16:01 on 6 May 2026. Culmination 07:56 at 76.1° — that is 97% of what the same stream would deliver with the radiant overhead — and the ceiling on the rate is 9.0 meteors an hour.

That ranks it 7th of twelve from Bangkok this year, behind the Geminids (141.8/h) and the Perseids (64.3/h).

The radiant track over this city

The radiant rises at 01:56 bearing E, culminates 76.1° up at 07:56 towards south (180°), and sets at 13:56. It lies inside Aquarius. The rate scales with the sine of that altitude, so 76.1° buys you 97% of a zenith radiant.

When it gets dark here

Bangkok loses the Sun at 18:34 and gets it back at 05:54. True astronomical darkness — the only part that counts for faint meteors — runs 19:50 to 04:38, 8 h 49 min out of 11 h 19 min of night.

Local solar midnight, the true middle of the night, falls at 00:14 here rather than at 00:00: Asia/Bangkok runs 18 minutes ahead of mean solar time at 100.50°E. That offset is why the best hour on this page is not the hour you would guess from the clock.

What the Moon does here

Moonlight is the limiting factor on this night from Bangkok. The Moon is 79% lit and only 4 of 11 sampled hours are moon-free. Moonrise 22:34. Moonset 10:00. At the best hour it stands 48.6° above the horizon, 59° from the radiant, pulling the limiting magnitude down to 5.33.

Why 9 an hour and not 50

Converting ZHR 50 into something useful for Bangkok means multiplying by sin(44.2°) and dividing by 2.4 raised to (6.5 − 5.33). That lands at 9.0 meteors an hour, from very fast 66.3 km/s entries.

Hour by hour the modelled rate runs from 0.0 at 19:00 (radiant -70.5°) to 2.0 at 05:00 (radiant 44.2°), peaking at 9.0. That spread across 11 hours is why a "what time" answer beats a "how many" answer.

The stream comes from Comet 1P/Halley and is listed as active 19 April to 27 May, so 6 May 2026 is the best night from Bangkok rather than the only one.

Watching from around Bangkok

Bangkok is the 55th largest of the 300 cities covered here, with a population of 5.10 million at 12 m above sea level. The nearest other cities on the site are Phnom Penh (537 km ESE), Yangon (576 km NW), Cần Thơ (708 km SE) — close enough that the radiant altitudes barely change, far enough that sunset and moonrise do.

What this page does not know

Light-pollution data for this location is not connected yet. Rates on this page are computed against the reference rural sky the zenithal hourly rate is defined for (naked-eye limiting magnitude 6.5); they are not a claim about how bright the sky is where you are standing. Once the light-pollution layer is connected these figures will be recomputed for the local sky and will generally fall.

Cloud cover is a forecast, not a constant, so it is resolved when you load the tonight card and is deliberately absent from this prerendered page — the hourly table shows "unavailable" rather than assuming clear skies. Meteor outbursts, local terrain and building horizons are not modelled.

A single observer with an unobstructed horizon typically records 30–50% below the ideal-sky figure. Give your eyes twenty minutes to adapt, keep bright screens away, look about halfway up the sky rather than straight at the radiant, and count for a full hour before judging a shower.