Sundial, calendar & Khmer temples


All pages about
sundial and experimental astroarchaeology
are being updated and will be re-uploaded
in January 2014

The Lunar Eclipse, March 2007

Solar events at Prasat Phanom Rung
and other Khmer temples.


Orientations of Khmer Temples
in Eastern and and NE-Thailand
the Indian Circle

Download as PDF



The Indian Circle

An ancient method
for determining true east.

Articles in Bangkok Post:

New light on an ancient site (March 2000).

Celestial romp! (March 2007).


Determination of true north

Two methods determining true north.
Article in the Muang Boran Journal:

The Sun, the Moon, and Rahu
                   at Prasat Phanom Rung

สุริยัน จันทรา และราหูที่ปราสาทพนมรุ้ง: ข้อสังเกตทางโบราณดาราศาสตร์

A modern Solar House

The author's office
with embedded calendric aspects.
Prasat Phanom Rung:

General information

Annual festivities


Prasat Sdok Kok Thom I

An ancient Khmer temple
orientated towards true east

General information

Paper about Prasat Phanom Rung
presented in January 2011at
the Ninth 'Oxford' International Symposium
on Archaeoastronomy
Prasat Sdok Kok Thom II

Field-notes and methods on astro-archaeology
from a visit around spring equinox 2009

Prasat Phu Phek:

Field research and measurements
at a mountain-temple in Sakon Nakon.

Not a 'solar calendar'

Prasat Sdok Kok Thom III

Dating inscription K.235

Muang Tam:

General information


Banteay Srey:

Banteay Srey art

2004 explorations

The Cultural Route
from Angkor in Cambodia
to Phimai in Thailand:

The Dharmasala Route


Bayon art


Prasat Preah Vihear / Phra Vihan

An ancient Khmer temple
orientated towards true north

Preah Vihear

The Vajra
A literature study
The jungle temple:

A Khmer temple in no-man's land
on the Thai-Cambodian border

Ta Khwai


21 March 2011 Asger Mollerup