TidePlanet
Official alerts:
  • High Wave Advisory (波浪注意報) · Obira Town: waves up to 9.8 ft, take care. Until further notice. Japan Meteorological Agency (JMA), issued today at 1:07 am · Public Data License 1.0
    Official text

    Japanese

    上川・留萌地方波浪警報・注意報

    留萌地方では、高波に注意してください。
    小平町:波浪注意報(継続)
    波高:3メートル

    出典:気象庁ホームページ (https://www.jma.go.jp/). TidePlanet has extracted this area’s warnings from the JMA’s, translated their names and converted their figures to the chosen units: this is not an official JMA publication.

  • Gale Advisory (強風注意報) · Obira Town: winds up to 29 mph on land and 40 mph at sea, take care. Until further notice. Japan Meteorological Agency (JMA), issued Wed 28, 8:32 pm · Public Data License 1.0
    Official text

    Japanese

    上川・留萌地方暴風(雪)警報・注意報

    留萌地方では、強風に注意してください。
    小平町:強風注意報(継続)
    陸上 最大風速:13メートル
    海上 最大風速:18メートル

    出典:気象庁ホームページ (https://www.jma.go.jp/). TidePlanet has extracted this area’s warnings from the JMA’s, translated their names and converted their figures to the chosen units: this is not an official JMA publication.

Today in Obirachō there are high tides at 3:53 am (1.0 ft) and 7:25 pm (1.0 ft) and low tides at 11:28 am and 10:52 pm. Tide coefficient 112. Right now the tide is falling toward the low tide at 11:28 am. The sun rises at 6:05 am and sets at 4:28 pm: 10 h 23 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 6:16 pm. Major solunar periods run from 12:33 am to 2:33 am and from 1:05 pm to 3:05 pm. The next spring tides arrive from October 27 to 29. The sea is moderate, with 7.5 ft waves. There's a gentle breeze from the west (11 mph). Mainly clear, 43 °F.

Fishing

Fishing in Obirachō today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
5
Average day · 5 out of 10 10:30 am–12:30 pm Also 9:50–11:50 pm and 7:30–8:20 pm
  • Low tide at 11:28 am
  • Rising pressure (+0.44 inHg in 24 h), light onshore wind (7 mph) and 5.6 ft waves
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 112 (big spring tides)

Your day at a glance

The best window, 10:30 am to 12:30 pm, combines the 11:28 am low tide and a light onshore breeze, though with rising pressure. Also good from 9:50 pm to 11:50 pm, with the 10:52 pm low tide. Also good from 7:30 pm to 8:20 pm, with the 7:25 pm high tide.

How it works · Next 7 days · Fishing rules

Beach

Beach day in Obirachō

Beach forecast, 7 days →

Is it a beach day?

0
Not a beach day · 0 out of 10 No good beach time today.
  • Sun and clouds
  • Low tide at 11:28 am: more sand
  • Feels like 40 °F: chilly for the beach
  • Rain (0.02 in)
  • Moderate onshore wind (12 mph): choppy water
  • Dangerous for swimming: 7.9 ft waves every 7 s; high rip current risk

Dangerous surf during beach hours. Stay out if the red flag is up, and never swim where there is no lifeguard.

Today, hour by hour

  • Swimming Dangerous · 7.9 ft

    7.9 ft waves every 7 s: dangerous for swimming. Stay out if the red flag is up. High rip current risk. If you're caught in a rip current, don't swim against it: swim parallel to shore and wave for help. Always follow the lifeguard's flags.

  • Water 59 °F

    Very cold: ease in and keep swims short.

  • Sun & sunscreen UV 2 · SPF 15

    Max UV 2 (low): SPF 15 sunscreen.

  • Wind 12 mph

    Moderate onshore wind (12 mph).

  • Tide & sand 11:28 am

    Low tide at 11:28 am and 10:52 pm: that's when there's the most sand. High tide at 3:53 am and 7:25 pm.

We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days

Beaches near Obirachō

We don't know of any named beaches within 6.2 mi of Obirachō.

Missing one? Beaches come from OpenStreetMap: you can add it there. Add or fix on OpenStreetMap

Beaches and amenities: © OpenStreetMap contributors (ODbL).

Tides

Tides in Obirachō

Tides for 7 days →

Today's high and low tides

  • ▲ High tide 3:53 am 1.0 ft · coef. 107
  • ▲ High tide 7:25 pm 1.0 ft · coef. 112
  • ▼ Low tide 10:52 pm 1.0 ft

↓ Falling The tide is falling. 3 h 35 min to low tide at 11:28 am.

Tide coefficient 107 for the 3:53 am high tide and 112 for the 7:25 pm high tide. Big spring tides. The water rises and falls 0.9 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?

2026 extremes: the highest tide of the year is on July 15 (1.3 ft) and the lowest, on April 19 (-0.3 ft).

Mixed, mainly diurnal: on many days there is only one high and one low tide.

Heights above NLLW. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. NLLW

Tide coefficient and range in October

The biggest tides of the month come from October 29 to 31 (coefficient 114, 0.9 ft range). The smallest, on October 24 (coefficient 20, 0.4 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:05 am · 4:28 pm High tide 3:53 am · 1.0 ft Low tide 11:28 am · 0.1 ft High tide 7:25 pm · 1.0 ft Low tide 10:52 pm · 1.0 ft Coef. 112 88% Major periods 12:33 am · 1:05 pm Medium
Fri 30 6:07 am · 4:27 pm High tide 4:21 am · 1.1 ft Low tide 12:23 pm · 0.2 ft — — Coef. 114 80% Major periods 1:38 am · 2:10 pm High
Sat 31 6:08 am · 4:26 pm High tide 4:50 am · 1.1 ft Low tide 1:25 pm · 0.2 ft — — Coef. 113 69% Major periods 2:42 am · 3:13 pm Medium
Sun 1 6:09 am · 4:24 pm High tide 5:16 am · 1.0 ft Low tide 2:39 pm · 0.3 ft — — Coef. 106 58% Major periods 3:42 am · 4:11 pm Medium
Mon 2 6:10 am · 4:23 pm High tide 2:33 am · 1.0 ft Low tide 4:05 pm · 0.3 ft — — Coef. 95 Last quarter Major periods 4:38 am · 5:04 pm Medium
Tue 3 6:12 am · 4:21 pm High tide 1:57 am · 0.9 ft Low tide 5:39 pm · 0.4 ft — — Coef. 77 36% Major periods 5:29 am · 5:54 pm Medium
Wed 4 6:13 am · 4:20 pm High tide 1:24 am · 0.8 ft Low tide 7:02 am · 0.6 ft High tide 11:17 am · 0.8 ft Low tide 6:58 pm · 0.4 ft Coef. 55 26% Major periods 6:17 am · 6:40 pm Medium

▲ high tide · ▼ low tide · heights above NLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.

Where this tide comes from

A · Official station

Tides from the Rumoi station (TICON-4), 5.0 mi from Obirachō. Times and heights are its predictions.

Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data

How we calculate the tide

Sea and waves

The sea at Obirachō

7-day waves

Sea stateSea state: moderate

Moderate Douglas 4 · moderate breeze, Beaufort 4
Waves 7.5 ft · 7.1 s from the west (281°)
Swell 5.3 ft · 6.5 s from the west
Current 0.3 mph toward the E

The waves you may find

  • Most commonMost common3.7 ft
  • Significant7.5 ft
  • Highest expectedHighest15 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 15 ft. Before heading out, expect waves of up to 15 ft.

Wind on the coast and offshore

On the coast 11 mph W · gusts 25
Offshore (8.5 mi W)Offshore 16 mph WSW · gusts 27

Onshore wind. The coast faces west and the wind blows straight in from the sea: more surf and backwash at the shore, and bait and boats drift toward land.

Onshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves build over the next few days. The biggest waves arrive on Sunday 1: 11 ft with a period of 8 s, from the west-northwest (rough).

Water temperature

Water temperature →
Water now58.6 °F
Today 58.3–59.0 °F air: 38 / 48 °F
Satellite (2 days ago) 58.6 °F measured 0.4 mi away

Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 56.8 °F by Wednesday 4.

Water about normal for late October.

Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses

Water temperature →

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 7:53 am (local time).

Surf

Surf in Obirachō today

Surf hour by hour and 7 days →

Surf today

Good
6
Good · 6 out of 10 3:00–4:58 pm 3.1–4.7 ft Also 10:00 am–2:00 pm
  • 3.1–4.7 ft surf at the shore, a good size with some punch
  • 4.9 ft swell at 5 s from the west, short: weak, messy waves
  • Light offshore wind (11 mph): it holds up and grooms the waves
  • Rising tide (high tide at 7:25 pm)
Surf at the shore 3.1–4.7 ft average – sets
Swell 4.9 ft 5 s · W · 129 kJ
Wind 11 mph S · offshore
Water and wetsuit 58.3 °F 4/3 fullsuit
  • Light: First light 5:35 am · sunrise 6:05 am · sunset 4:28 pm · last light 4:58 pm
  • Tide: high 3:53 am (1.0 ft), low 11:28 am (0.1 ft), high 7:25 pm (1.0 ft) and low 10:52 pm (1.0 ft). Every break has its own tide: some work at low tide and others at high tide. The tide doesn’t change the score here.
  • Water at 58.3 °F: a 4/3 fullsuit (booties if you run cold).
  • Energy: 129 kJ · Medium power

Today’s surf at a glance

The best window, 3:00 pm to 4:58 pm, has a good size and light offshore wind, though with a short-period swell. 10:00 am to 2:00 pm can also work, with a good size, though with a short-period swell.

An estimate for this stretch of coast, not for a specific break: every beach or reef works its own way (its tide, bottom and angle). Check it when you get there.

Follow the flags and the lifeguards, and don’t paddle out if the surf is above your level: this score is a guide, not a substitute for what you see when you get there.

How it’s calculated · Next 7 days

Diving

Diving in Obirachō today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: poor
6
Average day · 6 out of 10 11:00 am–12:00 pm
  • Slack water around low tide (11:28 am): little current from 11:13 am to 11:43 am
  • 4.1 ft swell at 6 s from the west: some surge on the bottom
  • Light onshore wind (7 mph)
  • 0.4 mph current toward the east-northeast, weak (model)
  • Sun high: more light underwater
Swell 4.1 ft 6 s · from the W
Likely visibility Poor Snorkeling: poor
Water and suit 58.3 °F 7 mm wetsuit
Current 0.4 mph toward the ENE
  • Slack water today: high tide 3:53 am (3:38–4:10 am), low tide 11:28 am (11:13–11:43 am), high tide 7:25 pm (7:10–7:50 pm) and low tide 10:52 pm (10:00 pm–12:20 am)
  • Likely visibility: poor. Swell (up to 6.0 ft at 9 s) and rain (0.58 in) over the last few days have stirred up the water. Based on the last 24 hours of data.
  • Water at 58.3 °F: a 7 mm wetsuit, with hood and booties.
  • Snorkeling: better not, with these waves, wind or current.
  • Night dive: dark from 4:58 pm. Waning gibbous (88%), rising at 6:16 pm: a bright night.

Your diving day at a glance

The best window, 11:00 am to 12:00 pm, combines slack water at low tide, light wind, weak current and the sun high, though with some swell.

Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.

Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.

How it works · Next 7 days

Dive sites, wrecks and dive shops nearby

We have no dive sites, dive shops or wrecks on record within 12 mi of Obirachō.

If you know one, you can add it to OpenStreetMap and it will show up here after the next update. Missing one? Add it to OpenStreetMap

Sites: © OpenStreetMap contributors (ODbL).

Weather

Weather in Obirachō

14-day weather

Now in Obirachō

Now 43 °F Mainly clear · feels like 33 °F · 38 / 48 °F
Low / high
38 / 48 °F
Rain
0.30 in · 100%
Clouds
42%
Humidity
50%
Dew pointDew point
26 °F
Visibility
15 mi
UV indexUV
1 · low
Air qualityAir
Fair · 30
Saharan dust
No

Pressure and fishing

  • ↗ RisingRising · now Anglers say fish bite less for a while
  • → SteadySteady Anglers expect normal activity
  • ↘ FallingFalling Anglers say fish feed more before the change

Rising now (+0.04 inHg in 3 hours). Over the next 48 hours: −0.55 inHg. Rising pressure: anglers say fish bite less for a while. Fast changes, either way, tend to affect fishing.

Today, hour by hourHour by hour

Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.

Time 12:00 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky Light snowLight snowMainly clearPartly cloudyOvercastOvercastLight drizzleLight rain
Temperature 38°38°40°44°47°47°43°43°
Wind (mph) 14 WNW15 WNW14 W9 WSW7 SSW10 S11 SSE12 SE
Gusts 2932302119232623
Waves 9.6 ft9.2 ft8.5 ft6.9 ft5.6 ft5.1 ft5.1 ft5.4 ft
Rain 0.01 in0.01 in0.00 in0.00 in0.00 in0.00 in0.02 in0.05 in
  • 9:00 am 44° 9 WSW 6.9 ft
  • 12:00 pm 47° 7 SSW 5.6 ft
  • 3:00 pm 47° 10 S 5.1 ft
  • 6:00 pm 43° 11 SSE 5.1 ft
  • 9:00 pm 43° 12 SE 5.4 ft
  • 12:00 am 46° 12 SE 5.0 ft
  • 3:00 am 46° 11 SE 4.3 ft
  • 6:00 am 47° 13 SE 3.9 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Light snow 38 / 48 °F 15 mph SW 9.6 ft 3:53 am · 7:25 pm
Fri 30 Drizzle 46 / 63 °F 13 mph SSE 5.0 ft 4:21 am
Sat 31 Light snow 39 / 54 °F 19 mph W 8.5 ft 4:50 am
Sun 1 Snow 37 / 39 °F 22 mph WNW 11 ft 5:16 am
Mon 2 Light snow 34 / 47 °F 9 mph ESE 5.1 ft 2:33 am
Tue 3 Snow 36 / 41 °F 16 mph WNW 4.9 ft 1:57 am
Wed 4 Snow 33 / 42 °F 15 mph WNW 5.4 ft 1:24 am · 11:17 am
Thu 5 Light drizzle 33 / 52 °F 12 mph SE 4.7 ft 1:23 am · 1:00 pm
Fri 6 Snow 36 / 51 °F 14 mph WSW 3.6 ft 1:32 am · 2:23 pm
Sat 7 Snow 34 / 36 °F 18 mph WNW 11 ft 1:44 am · 3:28 pm
Sun 8 Snow 32 / 37 °F 16 mph W 11 ft 1:57 am · 4:20 pm
Mon 9 Snow 29 / 35 °F 10 mph W 5.5 ft 2:10 am · 5:06 pm
Tue 10 Snow 29 / 35 °F 11 mph ENE 5.6 ft 2:26 am · 5:49 pm
Wed 11 Snow 30 / 36 °F 12 mph WNW 7.1 ft 2:44 am · 6:31 pm
  • Fri 30 Drizzle 46° / 63° 5.0 ft
  • Sat 31 Light snow 39° / 54° 8.5 ft
  • Sun 1 Snow 37° / 39° 11 ft
  • Mon 2 Light snow 34° / 47° 5.1 ft
  • Tue 3 Snow 36° / 41° 4.9 ft
  • Wed 4 Snow 33° / 42° 5.4 ft
  • Thu 5 Light drizzle 33° / 52° 4.7 ft
See all 14 days →

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

  • The models They don't agree · low confidence: unsure about wind on Saturday 31. See the models →
  • Outlook Next few weeks, compared with normal: a bit cooler, normal rain and a near-normal sea. See the outlook →
  • Normal Today, cooler than normal for late October (−5.2 °F; normal high: 53 °F). Climate by month →

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 7:53 am (local time).

Sun

The sun in Obirachō

Sunrise and sunset →

Sunrise and sunset

Rises 6:05 am in the ESE (108°)ESE
Sets 4:28 pm in the WSW (252°)WSW
  • First light 5:01 am
  • Full dark 5:32 pm
  • Civil dawn 5:35 am
  • Civil dusk 4:58 pm
  • Solar noon 11:17 am (33° high)
  • Daylight 10 h 23 min (−3 min)
  • Evening golden hour 3:47 pm
  • Full dark 5:32 pm

Golden hour and the day-night map

Morning golden hour6:05–6:46 am
Evening golden hour3:47–4:28 pm
Obirachō

Today the sun is 92,345,082 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Obirachō

The moon for 7 days →

Moon phase and position

Waning gibbous · 88% 88% illuminated · 18.5 days old New moon on Mon, Nov 9 · 4:03 pm
Rises 6:16 pm in the NE (50°)NE
Sets 11:00 am tomorrow · in the NW (310°) · set at 9:53 am
Transit 1:33 am overhead
Visible 16 h 45 min from 6:16 pm to 11:00 am

Today the moon is 226,480 mi away and looks 32′ 46″ across.

Solunar periods

Today's activity: medium
  • 12:33–2:33 am Major · the moon passes overhead · high activity
  • 1:05–3:05 pm Major · the moon passes underfoot · high activity
  • 9:23–10:23 am Minor · moonset · medium activity
  • 5:46–6:46 pm Minor · moonrise · medium activity

According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.

Upcoming moon phases

2026 moon calendar →
  • Last quarter Mon, Nov 2 · 5:29 amNov 2 in 4 days
  • New moon Mon, Nov 9 · 4:03 pmNov 9 in 11 days
  • First quarter Tue, Nov 17 · 8:48 pmNov 17 in 19 days
  • Full moon Tue, Nov 24 · 11:54 pmNov 24 in 26 days

Perigee on October 29, 226,426 mi away, coinciding with the spring tides from October 27 to 29: they will be stronger than usual.

Place

Where to fish in Obirachō

All places in Hokkaido →

Piers, ramps and tackle shops nearby

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap

Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.

Water depth

Deepens quickly

The bottom deepens quickly: 33 ft of water 0.3 mi from shore.

From the shoreline (0.35 mi from Obirachō) out to sea, heading west.

How far from shore

  • 16 ft deep550 ft
  • 33 ft deep0.3 mi
  • 66 ft deep1.1 mi
  • 164 ft deepnot within 3.1 mi

For fishing, swimming and diving

  • Shore fishing. Deep water close in: about 13 ft just 330 ft out. Good for casting from rocks, jetties or the beach itself; current and surf hit harder here.
  • Swimming. The bottom drops quickly near the shore and you are soon out of your depth. Keep an eye on kids and weak swimmers.
  • Diving. 33 ft deep 0.3 mi from shore; 66 ft is far out (1.1 mi): for deeper dives, go by boat.

Rough estimate: here the data comes in cells of about 0.3 mi and misses details near shore (rocks, sandbars, small coves).

Source: NOAA ETOPO 2022 (CC0), cells of about 0.3 mi; depth below mean sea level. For reference only: not for navigation or anchoring.

Nearest lighthouse

Rumoi 4.4 mi south

Light
A white flash every 8 s · Fl W 8s
Range
20 nautical miles (23 mi)
Light height
190 ft above sea level
Tower height
56 ft

Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Sources and licenses

Tides near ObirachōTides nearby

All places in Hokkaido, A to Z (561) →

Obirachō at a glance

  • Town or city of about 2,994 people. Coordinates: 44.018° N, 141.668° E.
  • It is 162 mi north of Hakodate, the main place in Hokkaido. The sun rises at the same time and sets 8 min earlier than in Hakodate.
  • The nearest tide station, Rumoi, is 5.0 mi to the south.
  • Its coast faces west.

Questions about ObirachōQuestions

What time is high tide today in Obirachō?

Today in Obirachō there are high tides at 3:53 am (1.0 ft) and 7:25 pm (1.0 ft) and low tides at 11:28 am and 10:52 pm. Tide coefficient 112.

What time is sunset today in Obirachō?

At 4:28 pm. There is light until the end of civil twilight, at 4:58 pm.

What time is sunrise tomorrow in Obirachō?

At 6:07 am. First light comes at 5:03 am.

What phase is the moon today?

Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 4:03 pm.

When are the next spring tides?

From October 27 to 29, together with the lunar perigee: they will be stronger than usual.

What are today's solunar periods?

Major 12:33–2:33 am, Minor 9:23–10:23 am, Major 1:05–3:05 pm, Minor 5:46–6:46 pm. Today's activity is medium.

What's the weather like today in Obirachō?

Light snow, from 38 °F to 48 °F, with a gentle breeze from the west (11 mph) and a 100% chance of rain.

How is the sea today in Obirachō?

Moderate (Douglas 4): 7.5 ft waves with a period of 7.1 s from the west. The water is 58.6 °F.

When is the best time to visit Obirachō?

The best time to visit Obirachō is from July to August: highs of 73 °F to 76 °F, about 11 rainy days a month and 5 hours of sunshine a day.

Can I use this data for navigation?

No. These are predictions for fishing and leisure; for navigation, use the official publications.

Where this data comes from

Tide: Rumoi station, with constants from TICON-4 (Hart-Davis, Dettmering and Seitz, 2025, SEANOE), licensed CC BY 4.0, via Slackwater database (changes). Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).

Spotted a mistake? Tell us · How we calculate the tide

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Temperature Air and water
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Time Tides, sun and moon
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