Sun at Zenith Date & Time Finder

By the Astronomical Society of Brunei Darussalam | Powered by BruneiAstronomy.org

A phenomenon that occurs when the sun is positioned directly overhead at a specific location, causing vertical objects to cast no shadow - Zero Shadow Day. This happens because the sun’s rays fall perpendicular to the Earth’s surface, making the shadow fall directly beneath the object, effectively rendering it invisible. It can be observed only in regions between the Tropic of Cancer and the Tropic of Capricorn.

Enter your location's latitude, longitude, time zone offset, and a custom year to find the exact date(s) and time(s) when the sun is directly overhead (at a 90-degree angle).

Latitude: Longitude:

Default is BSB, Brunei Darussalam.

Year:

Enter a valid year (e.g., 1900-2100).

Angle Tolerance (°):

Enter a valid value between 0 and 1 (smaller is more precise)

If required, enter time offset (hours) to local noon:

Enter a valid time offset (e.g. -12 to +12).

If required, update Earth's mean obliquity:

Enter the latest parameter (e.g. -23.5 to +23.5).

Results:

Enter yourdetails and click 'Find Sun at Zenith Dates & Times'.

Note: Displayed times and values are generated based on the astronomical formula and your location which can be approximates. This Sun Zenith Finder web application is proudly developed by Hazarry Hj Ali Ahmad (webmaster@bruneiastronomy.org)