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Potaro-Siparuni, Guyana

Potaro-Siparuni observes Guyana Time at UTC−4 throughout the year. It has no daylight saving change, so Mahdia and the region’s smaller settlements keep a stable civil-time offset.

Mahdia, Guyana

Friday, 4 September 2026

UTC−4 · America/Guyana

Time and sun data for Mahdia — the largest city of Potaro-Siparuni

The sun in Mahdia

Sunrise 05:51 Solar noon 11:57 Sunset 18:03 Daylight 12 h 12 min Night 11 h 48 min Civil twilight 05:30 – 18:24

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Current time in Potaro-Siparuni, Guyana

The clock displayed for Potaro-Siparuni is valid across this large interior region. Mountains, forest, rivers, and distance can complicate travel and communications, but they do not divide the region into different time zones.

Local time agrees with the rest of Guyana. This means a call between Mahdia and Georgetown requires no conversion. A call abroad may require one, particularly if the other location changes its clocks seasonally.

Interior distance can turn “nearby” into a long journey, but it cannot add an hour to the clock. For a schedule shared internationally, label the time as UTC−4 or Guyana Time. Including the date is sensible because the overseas participant’s offset may differ from one part of the year to another.

Mahdia and regional settlements

Potaro-Siparuni is Region Eight of Guyana. It has a comparatively dispersed settlement pattern, so “largest cities” is less helpful here than identifying the main town and recognised communities used as local reference points.

Mahdia is the regional capital and principal town. Tumatumari is a known settlement in the region. Paramakatoi is an important Indigenous community in the interior. Monkey Mountain is another established community.

Kato serves as a reference point for part of the region’s highland area. Each uses UTC−4. However, the closest named location should be selected for sunrise or weather information. A regional clock can be exact for civil time while a single regional solar value remains only approximate for distant communities.

Sunrise in an interior landscape

Astronomical sunrise is calculated from coordinates and date. Potaro-Siparuni’s broad extent means a calculation for Mahdia should not automatically be treated as exact for Paramakatoi, Kato, or another distant community.

Terrain also changes the experience of dawn. Hills and ridges can block the eastern horizon, while forest cover may delay direct sunlight at ground level. The official sunrise calculation generally assumes a level horizon and therefore cannot describe every observer’s first view of the Sun.

Seasonal daylight variation is moderate because Guyana lies close to the equator. Even so, sunrise and sunset do not remain fixed at one clock time. Checking the intended date is valuable for aviation, overland travel, hiking, fieldwork, and photography.

Remember that twilight provides light before sunrise. In dense forest or poor weather, actual visibility may remain limited despite the astronomical progression of dawn.

Questions and answers

What time is used in Mahdia?
Mahdia uses Guyana Time, UTC−4.
Does Potaro-Siparuni change clocks for summer?
No. The offset stays unchanged throughout the year.
Can Mahdia’s sunrise time represent the whole region?
It is a useful reference, but distant communities and different terrain can have different local results.
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