Following are circles of latitude between the 50th parallel north and the 55th parallel north:

51st parallel north

The 51st parallel north is a circle of latitude that is 51 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.

At this latitude the sun is visible for 16 hours, 33 minutes during the summer solstice and 7 hours, 55 minutes during the winter solstice.

Capital cities between the 51st and 52nd parallels are London and Astana.

Russian America 1799–1824/25 In 1799 Paul I, Tsar of the Russian Empire, issued a ukase creating the Russian-American Company (RAC). It was granted monopolistic control north of the 55th parallel north, which had been the Russian claim since 1790, as well as the right to operate and occupy territory to the south as long as the lands had not been previously occupied, or dependent on any other nation. In 1821 the RAC's charter was renewed and at the same time an ukase proclaimed that Russian sovereignty extended south to the 51st parallel, and that waters north of that line were closed to foreign shipping. The ukase was met with strong objections by the United States and Great Britain. Subsequent negotiations resulted in a clear and permanent boundary for Russian America, the southward terminus of which was established at 54°40′ north.

Around the world Starting at the Prime Meridian (just north of the Sheffield Park Garden in East Sussex, England) and heading eastwards, the parallel 51° north passes through:

{| class="wikitable plainrowheaders" ! scope="col" width="125" | Coordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes

! scope="row" | | England: East Sussex, Kent (just south of Dover) |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Strait of Dover | style="background:#b0e0e6;" | Crosses the Channel Tunnel |-valign="top" | ! scope="row" | | Nord-Pas-de-Calais — passing just south of Dunkirk and the northernmost point of France

! scope="row" | | Passing all 5 provinces of Flanders

! scope="row" | | Limburg — for about — passing through Sittard |-valign="top" | ! scope="row" | | North Rhine-Westphalia — passing through northern Cologne Hesse Thuringia — passing through Erfurt Saxony-Anhalt Thuringia Saxony — passing just south of Dresden

! scope="row" |

! scope="row" | | Saxony

! scope="row" | | For about

! scope="row" |

! scope="row" | | For about

! scope="row" | | For about

! scope="row" | | Passing just south of Wrocław

! scope="row" | | Volyn oblast — passing just north of LutskRivne OblastZhytomyr Oblast — passing just north of KorostenKyiv Oblast — passing through Kyiv ReservoirChernihiv Oblast — passing just south of NizhynSumy Oblast — passing just north of Sumy

! scope="row" |

! scope="row" | |West Kazakhstan Region — passing just south of Oral, Kazakhstan

! scope="row" | |For about 25 km (15.5 mi)

! scope="row" | | For about

! scope="row" | | For about

! scope="row" | |For about 11 km (6.8 mi)

! scope="row" | |For about 9 km (5.5 mi)

! scope="row" | |For about 39 km (24 mi)

! scope="row" | |For about 32 km (19.8 mi)

! scope="row" | |For about 61 km (37 mi)

! scope="row" | |For about 199 km (123 mi)

! scope="row" | |Kostanay Region Akmola Region — passing just south of Derzhavinsk

Passing just south of Astana

Karaganda Region

East Kazakhstan Region

! scope="row" | |For about 42 km (26 mi)

! scope="row" | | For about

! scope="row" | | For about

! scope="row" | | For about

! scope="row" | |For about 2 km (1.2 mi)

! scope="row" | |For about 15 km (9.3 mi)

! scope="row" | | Passing Lake Khövsgöl

! scope="row" | | |-valign="top" | ! scope="row" | | Inner Mongolia Heilongjiang

! scope="row" |

| style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Strait of Tartary | style="background:#b0e0e6;" |

! scope="row" | | Island of Sakhalin |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Sea of Okhotsk | style="background:#b0e0e6;" |

! scope="row" | | Kamchatka Peninsula |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just south of Amatignak Island, Alaska, Passing just north of Vancouver Island, British Columbia, |-valign="top" | ! scope="row" | | British Columbia — passing through city of Revelstoke Alberta — passing through city of Calgary Saskatchewan Manitoba - passing just south of the city of Dauphin Ontario - passing just south of the town of Red Lake Passing just south of the tip of James Bay () Quebec |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Gulf of Saint Lawrence | style="background:#b0e0e6;" |

! scope="row" | | Newfoundland and Labrador — island of Newfoundland |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" | Passing just north of Groais Island, Newfoundland and Labrador,

! scope="row" | | England — Devon, Dorset, Wiltshire, Hampshire (passing just north of Southampton), West Sussex, East Sussex

Notable cities and towns on 51°N

52nd parallel north

The 52nd parallel north is a circle of latitude that is 52 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. In Canada, part of the legally defined border between Quebec and Newfoundland and Labrador is defined by the parallel, though Quebec maintains a dormant claim to some of the territory north of this line.

The catchment area of London, the capital city of England and the United Kingdom, can be broadly defined by the 51st and 52nd parallels.

At this latitude the sun is visible for 16 hours, 44 minutes during the summer solstice and 7 hours, 45 minutes during the winter solstice.

Around the world

Starting at the Prime Meridian (just west of the village of Barkway in Hertfordshire, England) and heading eastwards, the parallel 52° north passes through:

{| class="wikitable plainrowheaders" ! scope="col" width="125" | Coordinates ! scope="col" | Country, territory or sea ! scope="col" | Notes

! scope="row" | | England - passing just south of Ipswich |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | North Sea | style="background:#b0e0e6;" | |-valign="top" | ! scope="row" | | Provinces of South Holland, Utrecht and Gelderland, including directly through the cities of Delft, Gouda, Nieuwegein, and Arnhem. |-valign="top" | ! scope="row" | | States of North Rhine-Westphalia, Lower Saxony, Saxony-Anhalt and Brandenburg

! scope="row" | | passing just north of Zielona Góra, and through Biała Podlaska Airport

! scope="row" |

! scope="row" | | Chernihiv OblastSumy Oblast — passing just north of Shostka

! scope="row" |

! scope="row" |

! scope="row" |

! scope="row" |

! scope="row" | | Passing through Lake Baikal |-valign="top" | ! scope="row" | | Inner Mongolia Heilongjiang

! scope="row" | |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Strait of Tartary | style="background:#b0e0e6;" |

! scope="row" | | Island of Sakhalin |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Sea of Okhotsk | style="background:#b0e0e6;" |

! scope="row" | | Kamchatka Peninsula |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" |

! scope="row" | | Alaska - Kiska Island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Bering Sea | style="background:#b0e0e6;" |

! scope="row" | | Alaska - Segula Island |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Bering Sea | style="background:#b0e0e6;" | Passing just north of Khvostof Island, Davidof Island and Little Sitkin Island, Alaska,

! scope="row" | | Alaska - Semisopochnoi Island |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Bering Sea | style="background:#b0e0e6;" | Passing just north of Tanaga Island and Kanaga Island, Alaska,

! scope="row" | | Alaska - Adak Island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Bering Sea | style="background:#b0e0e6;" |

! scope="row" | | Alaska - Great Sitkin Island |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Bering Sea | style="background:#b0e0e6;" | Passing just north of Igitkin Island, Tagalak Island and Oglodak Island, Alaska, |-valign="top" | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Passing just south of Atka Island and Amlia Island, Alaska,

! scope="row" | | British Columbia - Kunghit Island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Pacific Ocean | style="background:#b0e0e6;" | Queen Charlotte Sound |-valign="top" | ! scope="row" | | British Columbia - Hunter Island, King Island and the mainland Alberta Saskatchewan Manitoba - including Lake Winnipegosis and Lake Winnipeg Ontario |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | James Bay | style="background:#b0e0e6;" |

! scope="row" | | Nunavut - Charlton Island and Carey Island |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | James Bay | style="background:#b0e0e6;" | |-valign="top" | ! scope="row" | | Quebec Newfoundland and Labrador Quebec Quebec / Newfoundland and Labrador border (disputed by Quebec) Newfoundland and Labrador |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" | Strait of Belle Isle

! scope="row" | | Newfoundland and Labrador - Belle Isle |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | Atlantic Ocean | style="background:#b0e0e6;" |

! scope="row" | | Passing directly through the country's highest point Carrauntoohil, County Kerry, County Cork, County Waterford |- | style="background:#b0e0e6;" | ! scope="row" style="background:#b0e0e6;" | St George's Channel | style="background:#b0e0e6;" | |-valign="top" | ! scope="row" | | Wales England - passing between Bletchley and Milton Keynes at 0° 44′ W

53rd parallel north

The 53rd parallel north is a circle of latitude that is 53 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.

At this latitude the sun is visible for 16 hours, 56 minutes during the summer solstice and 7 hours, 34 minutes during the winter solstice. Approximately 53°20′ North, north of this parallel, during the June summer solstice, the sun is visible for 17 hours exactly. If the latitude in the northern hemisphere is 53°47′ or smaller, it is possible to view both astronomical dawn and dusk every day of the month of August.

One minute of longitude along the 53rd parallel is approximately . One degree of longitude along the 53rd parallel is about .

Around the world

Starting at the Prime Meridian (northeast of Boston, Lincolnshire, England) and heading eastwards, the parallel 53° north passes through: