Solar Time Converter

Convert standard clock time to true local solar time.

About This Tool

Solar time is based on the actual position of the sun in the sky at your location, while standard time is fixed by political time zones. This tool converts your local standard time into apparent solar time using your longitude and time zone, applying the equation of time for a more accurate result.

Converter

Date

Time

Longitude (°, East +)

Latitude (°, North +)

Time Zone (UTC offset)

Real-time conversion is enabled — results update automatically as you edit any field. Latitude is optional and shown for reference only.

Result

Standard Time —

Solar Time —

Difference —

Equation of Time —

Longitude Correction —

How to Use

Enter the date and the local standard (clock) time.
Enter your longitude (East positive, West negative).
Select your local time zone as an offset from UTC.
The solar time and difference update automatically.
Use Convert to recompute, Copy to copy results, and Clear to reset.

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