Use the full year
February’s length depends on the year, so enter all four digits. The calendar supports 1900 through 2100 and computes the real number of days for each month. If you are planning a historical anniversary or a future project, verify that the heading matches the year you meant to select.
Know the calendar rule
In the Gregorian calendar, most years divisible by four have February 29. Century years are exceptions unless divisible by 400. That makes 2000 a leap year and 1900 and 2100 common years. The tool calculates dates from the selected year; it does not simply alternate a fixed February template.
Check weekday placement
A leap day also affects the weekday alignment of dates after February. If you are copying plans from an older sheet, do not assume a date is in the same column. Select the desired year and let the preview place day one and each following date under the correct weekday header.
Treat recurring dates carefully
An annual event on February 29 needs a separate decision in non-leap years. Some people choose February 28; others choose March 1. This calendar does not decide for you or move notes automatically. Enter the date that the relevant person or organization actually uses for that year.
Verify before distributing
Scan the month label and last numbered cell, then compare any important booking or deadline against its source. Print or download after that check. If you make calendars for several years, keep filenames with the year so a correct older page does not get mistaken for the current one. Also check the selected week start before sharing the page.
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