Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Solar Time vs Clock Time Calculator

Convert standard clock time to true solar time for any location and date. Useful for astronomers, sundial builders, and anyone tracking solar noon or sunrise/sunset times precisely.

Longitude (°)

Time Zone Offset from UTC (hours)

Day of Year (day)

Clock Time (24h) (h)

Clock Minutes (min)

Fill in the required fields to see your result.

Time Zones

International Meeting Time Planner

Score any proposed meeting time based on how well it falls within business hours for your organiser and two participants across different time zones. Use it to find a window that works for everyone without spreadsheet guesswork.

Proposed Meeting Time (h)

Organiser Time Zone

Participant 1 Time Zone

Participant 2 Time Zone

Business Hours Priority

Fill in the required fields to see your result.

Key differences

	Solar Time vs Clock Time Calculator	International Meeting Time Planner
Category	Time Zones	Time Zones
Inputs required	5	5
Result	Solar Time (hours)	Meeting Suitability Score (%)
What it does	Convert standard clock time to true solar time for any location and date. Useful for astronomers, sundial builders, and anyone tracking solar noon or sunrise/sunset times precisely.	Score any proposed meeting time based on how well it falls within business hours for your organiser and two participants across different time zones. Use it to find a window that works for everyone without spreadsheet guesswork.