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Found a date that looks wrong, or have a suggestion? A reproducible example helps us investigate.

Report an issue

Open an issue on GitHub

GitHub requires an account to submit an issue. Do not include private dates, personal information or confidential details in a public report.

What to include

• The page you used and the values you entered.
• Your selected time zone and counting rules.
• The result you expected and the result you saw.

This opens a template on your device. No report is sent automatically.