View source for 1st parallel south

{{Short description|Circle of latitude}}
{{Location map-line|lat=-1}}
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[[File:1st parallel Tanzania.png|thumb|The 1st parallel south forms most of [[Tanzania]]'s northern border with [[Uganda]], and a short section of its border with [[Kenya]].]]
The '''1st parallel south''' is a [[circle of latitude]] that is 1 [[degree (angle)|degree]] (69.2 miles/111.36 kilometers) [[south]] of the [[Earth|Earth's]] [[equator|equatorial plane]]. It crosses the [[Atlantic Ocean]], [[Africa]], the [[Indian Ocean]], [[Southeast Asia]], [[Australasia]], the [[Pacific Ocean]] and [[South America]].

The parallel defines most of the border between [[Uganda]] and [[Tanzania]], and a very short section of the border between [[Kenya]] and [[Tanzania]].<ref>{{cite journal | vauthors=((Médard, H.)) | journal=The International Journal of African Historical Studies | title="The Kagera River and the Making of a Contested Boundary: Territorial Legacies and Colonial Demarcations in Buganda (19th–20th Centuries) " with Ikram Kidari | volume=52 | pages=11–30 | date=1 May 2019}}</ref>

==Around the world==
Starting at the [[Prime Meridian]] and heading eastwards, the parallel 1° south passes through:

:{| class="wikitable plainrowheaders"
! scope="col" width="110" | Coordinates
! scope="col" | Country, territory or sea
! scope="col" | Notes
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|0|0|E|type:landmark|name=Prime Meridian}}
! scope="row" style="background:#b0e0e6;" | [[Atlantic Ocean]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|8|52|E|type:country|name=Gabon}}
! scope="row" | {{GAB}}
|
|-
| {{Coord|1|0|S|14|25|E|type:country|name=Republic of the Congo}}
! scope="row" | {{COG}}
|
|-
| {{Coord|1|0|S|17|20|E|type:country|name=Democratic Republic of the Congo}}
! scope="row" | {{COD}}
|
|-
| {{Coord|1|0|S|29|35|E|type:country|name=Uganda}}
! scope="row" | {{UGA}}
|
|-
| {{Coord|1|0|S|30|45|E|type:country|name=Uganda / Tanzania Border}}
! scope="row" | {{UGA}} / {{TZA}} border
| Mostly in [[Lake Victoria]]
|-
| {{Coord|1|0|S|33|56|E|type:country|name=Kenya / Tanzania Border}}
! scope="row" | {{KEN}} / {{TZA}} border
| A short section of the border (about {{cvt|11|km}}), entirely within [[Lake Victoria]]
|-
| {{Coord|1|0|S|34|1|E|type:country|name=Kenya}}
! scope="row" | {{KEN}}
| Passing about {{cvt|30|km}} north of the capital, [[Nairobi]]
|-
| {{Coord|1|0|S|41|7|E|type:country|name=Somalia}}
! scope="row" | {{SOM}}
|
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|42|2|E|type:waterbody|name=Indian Ocean}}
! scope="row" style="background:#b0e0e6;" | [[Indian Ocean]]
| style="background:#b0e0e6;" | Passing just south of [[Addu Atoll]], {{MDV}}
|-
| {{Coord|1|0|S|98|39|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Siberut]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|98|56|E|type:waterbody|name=Mentawai Strait}}
! scope="row" style="background:#b0e0e6;" | [[Mentawai Strait]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|100|21|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Sumatra]] - passing just south of [[Padang]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|103|59|E|type:waterbody|name=Karimata Strait}}
! scope="row" style="background:#b0e0e6;" | [[Karimata Strait]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|109|27|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Islands of [[Maya Karimata]] and [[Borneo]]<br/>[[West Kalimantan]]<br/>[[Central Kalimantan]]<br/>[[East Kalimantan]]<br/>Passing just south of [[Nusantara (planned city)|Nusantara]] (at {{Coord|0|58|23|S|116|42|31|E|type:city|name=Nusantara}})
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|117|8|E|type:waterbody|name=Makassar Strait}}
! scope="row" style="background:#b0e0e6;" | [[Makassar Strait]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|119|28|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Sulawesi]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|120|30|E|type:waterbody|name=Gulf of Tomini}}
! scope="row" style="background:#b0e0e6;" | [[Gulf of Tomini]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|121|23|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Sulawesi]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|122|47|E|type:waterbody|name=Banda Sea}}
! scope="row" style="background:#b0e0e6;" | [[Banda Sea]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|123|12|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Sulawesi]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|123|22|E|type:waterbody|name=Molucca Sea}}
! scope="row" style="background:#b0e0e6;" | [[Molucca Sea]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|128|19|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Damar (Island)|Damar]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|128|24|E|type:waterbody|name=Halmahera Sea}}
! scope="row" style="background:#b0e0e6;" | [[Halmahera Sea]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|130|38|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Islands of [[Salawati]] and [[New Guinea]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|134|3|E|type:waterbody|name=Cenderawasih Bay}}
! scope="row" style="background:#b0e0e6;" | [[Cenderawasih Bay]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|134|48|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Numfor]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|134|57|E|type:waterbody|name=Cenderawasih Bay}}
! scope="row" style="background:#b0e0e6;" | [[Cenderawasih Bay]]
| style="background:#b0e0e6;" |
|-
| {{Coord|1|0|S|135|48|E|type:country|name=Indonesia}}
! scope="row" | {{IDN}}
| Island of [[Biak]]
|-valign="top"
| style="background:#b0e0e6;" | {{Coord|1|0|S|136|8|E|type:waterbody|name=Pacific Ocean}}
! scope="row" style="background:#b0e0e6;" | [[Pacific Ocean]]
| style="background:#b0e0e6;" | Passing just north of the atolls of [[Pelleluhu]] and [[Heina]], {{PNG}}<br/> Passing just south of the [[Kaniet Islands]], {{PNG}}<br/> Passing just south of [[Banaba Island]], {{KIR}}<br/> Passing between the atolls of [[Nonouti]] and [[Tabiteuea]], {{KIR}}
|-
| {{Coord|1|0|S|91|26|W|type:country|name=Ecuador}}
! scope="row" | {{ECU}}
| Island of [[Isabela Island (Ecuador)|Isabela]]
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|91|4|W|type:waterbody|name=Pacific Ocean}}
! scope="row" style="background:#b0e0e6;" | [[Pacific Ocean]]
| style="background:#b0e0e6;" | Passing just south of the island of [[San Cristóbal Island|San Cristóbal]], {{ECU}}
|-
| {{Coord|1|0|S|80|51|W|type:country|name=Ecuador}}
! scope="row" | {{ECU}}
| Passing just south of [[Manta, Ecuador|Manta]]
|-
| {{Coord|1|0|S|75|23|W|type:country|name=Peru}}
! scope="row" | {{PER}}
|
|-
| {{Coord|1|0|S|74|16|W|type:country|name=Colombia}}
! scope="row" | {{COL}}
|
|-valign="top"
| {{Coord|1|0|S|69|25|W|type:country|name=Brazil}}
! scope="row" | {{BRA}}
| [[Amazonas (Brazilian state)|Amazonas]]<br/> [[Roraima]]<br/> Amazonas<br/> [[Pará]]<br/> [[Amapá]]<br/> [[Maranhão]]<br/> Pará - islands of [[Ilha Grande do Gurupá|Grande do Gurupá]] and [[Marajó]], and the mainland
|-
| style="background:#b0e0e6;" | {{Coord|1|0|S|46|11|W|type:waterbody|name=Atlantic Ocean}}
! scope="row" style="background:#b0e0e6;" | [[Atlantic Ocean]]
| style="background:#b0e0e6;" |
|-
|}

==See also==
*[[Equator]]
*[[2nd parallel south]]

==References==
{{Reflist}}

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{{geographical coordinates|state=collapsed}}

[[Category:Circles of latitude|s01]]
[[Category:Kenya–Tanzania border]]
[[Category:Tanzania–Uganda border]]