Cities between 30°–40° South
Between 30° and 40° south of the equator (our cities here run from 30.03°S to 39.81°S), the longest day (around December 21) lasts about 14h 05m to 15h 00m, and the shortest (around June 21) about 9h 21m to 10h 13m.
| City | Latitude | Longest day | Shortest day |
|---|---|---|---|
| Porto Alegre Brazil | 30.03°S | 14h 05m | 10h 13m |
| Córdoba Argentina | 31.41°S | 14h 12m | 10h 06m |
| San Juan Argentina | 31.54°S | 14h 12m | 10h 05m |
| Santa Fe Argentina | 31.65°S | 14h 13m | 10h 05m |
| Pelotas Brazil | 31.77°S | 14h 13m | 10h 04m |
| Perth Australia | 31.95°S | 14h 14m | 10h 03m |
| Mendoza Argentina | 32.89°S | 14h 19m | 9h 59m |
| Newcastle Australia | 32.93°S | 14h 19m | 9h 59m |
| Rosario Argentina | 32.95°S | 14h 20m | 9h 58m |
| East London South Africa | 33.02°S | 14h 20m | 9h 58m |
| Valparaíso Chile | 33.04°S | 14h 20m | 9h 58m |
| Santiago Chile | 33.46°S | 14h 22m | 9h 56m |
| Sydney Australia | 33.87°S | 14h 24m | 9h 54m |
| Cape Town South Africa | 33.93°S | 14h 25m | 9h 53m |
| Gqeberha South Africa | 33.96°S | 14h 25m | 9h 53m |
| Buenos Aires Argentina | 34.61°S | 14h 29m | 9h 50m |
| Montevideo Uruguay | 34.90°S | 14h 30m | 9h 48m |
| La Plata Argentina | 34.92°S | 14h 30m | 9h 48m |
| Adelaide Australia | 34.93°S | 14h 30m | 9h 48m |
| Canberra Australia | 35.28°S | 14h 32m | 9h 46m |
| Concepción Chile | 36.83°S | 14h 41m | 9h 38m |
| Auckland New Zealand | 36.85°S | 14h 41m | 9h 38m |
| Hamilton New Zealand | 37.78°S | 14h 47m | 9h 33m |
| Melbourne Australia | 37.81°S | 14h 47m | 9h 32m |
| Mar del Plata Argentina | 38.00°S | 14h 48m | 9h 31m |
| Geelong Australia | 38.15°S | 14h 49m | 9h 31m |
| Bahía Blanca Argentina | 38.72°S | 14h 53m | 9h 27m |
| Temuco Chile | 38.74°S | 14h 53m | 9h 27m |
| Neuquén Argentina | 38.95°S | 14h 54m | 9h 26m |
| Valdivia Chile | 39.81°S | 15h 00m | 9h 21m |
Cities at the same latitude share almost the same day length, whatever their longitude. Differences come from the exact latitude and from terrain, not from time zones. See how latitude shapes daylight.