weekday()
Date & Time
weekday() is a MATLAB®-compatible date & time function for day-of-week index for a datetime. matlab convention: sunday=1, monday=2, ..., saturday=7. Run it online in your browser with SimLab — free, no install, no license required.
Day-of-week index for a datetime. MATLAB convention: Sunday=1, Monday=2, ..., Saturday=7.
Syntax
weekday(d)
Examples — run weekday() in your browser
w = weekday(datetime('2024-01-15')); % 2 (Monday)▶ RunLimitations
Differs from ISO convention (Monday=1). MATLAB uses Sunday=1 throughout.
See Also
Frequently Asked Questions about weekday()
Is the weekday() function free to use in SimLab?
The browser workspace requires no MATLAB® license or installation. Connected features require network access and may have account, tier, availability, or usage limits. You can open weekday() and 510+ other MATLAB®-compatible function references at simulations4all.com/simlab.
Do I need to install MATLAB to use weekday()?
No. SimLab’s core parser, workspace state, and most functions run locally in your browser. The weekday() function requires no MATLAB® license or desktop software download.
What does weekday() do?
Day-of-week index for a datetime. MATLAB convention: Sunday=1, Monday=2, ..., Saturday=7. It is a MATLAB®-compatible date & time function available in SimLab with the same calling syntax as MATLAB® — typically: weekday(d).
Can I run weekday() in my browser?
Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls weekday(), and run it. This function’s calculation runs locally in the browser. SimLab session analytics, sharing, feedback, and eligible acceleration have separate network boundaries.
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510+ functions. Runs in your browser. No install. No license.
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