Common year beginning on Wednesday (calendar pattern)

Monthly layout and weekday starts

Knowing the weekday of January 1 fixes the weekday that begins every month in a common year. For a common year that starts on Wednesday the months begin as follows:

• January — Wednesday
• February — Saturday
• March — Saturday
• April — Tuesday
• May — Thursday
• June — Sunday
• July — Tuesday
• August — Friday
• September — Monday
• October — Wednesday
• November — Saturday
• December — Monday

The progression arises because 31-day months advance the next month start by three weekdays and 30-day months by two; February in a common year does not change the pattern beyond its length. This predictable layout makes it straightforward to determine weekdays for fixed dates and to plan recurring events.

Friday the 13th

In this calendar pattern there is only one Friday the 13th in the year: it occurs in June. The property of having a single Friday the 13th is uncommon among year types and is shared with a leap year starting on Tuesday. By comparison, other common-year patterns such as a common year starting on Friday or a common year starting on Saturday produce different numbers and placements of Friday the 13ths.

Holidays and observances

Fixed-date holidays and many movable observances fall on predictable weekdays in this pattern. Examples, using common U.S. observance rules for illustration, include:

• Martin Luther King Jr. Day (third Monday in January) — January 20
• Valentine's Day — Friday
• Presidents Day (third Monday in February) — February 17
• St. Patrick's Day — Monday
• Mother's Day (second Sunday in May) — May 11
• Memorial Day (last Monday in May) — May 26
• Father's Day (third Sunday in June) — earliest possible, June 15
• Independence Day — Friday
• Labor Day (first Monday in September) — earliest possible, September 1
• Columbus Day (second Monday in October) — October 13
• Halloween — Friday
• Veterans Day — Tuesday
• Thanksgiving (fourth Thursday in November) — November 27
• Christmas — Thursday

Examples in modern calendars

The same weekday pattern appears periodically in both modern civil calendars. In the Gregorian calendar recent examples include 1975, 1986, 1997, 2003, 2014 and 2025. In the Julian calendar comparable patterns occur in different years such as 2015 and 2026 because the Julian leap rule produces a different long-term cycle.

Century years and frequency

Century years (those divisible by 100) are special under Gregorian rules: they are common unless divisible by 400. A century year that is common and begins on Wednesday corresponds to a century that gives a remainder of 200 when divided by 400; a historical example is 1800 and a future example under Gregorian rules will be 2200 (see navigation links). The Gregorian calendar repeats its weekday pattern every 400 years, so the frequency and spacing of this common-year pattern follow that cycle; the Julian cycle is separate and longer in practical alignment of weekdays and dates.

Calculation notes and uses

Determining whether a given year is a common year starting on Wednesday can be done with simple weekday arithmetic or established algorithms (Zeller's congruence, Doomsday rules, or tabular methods). The dominical letter E historically designates this case for liturgical and civil date computation. Such information is useful in calendar design, historic date interpretation, scheduling annual events, and programming date libraries that must account for weekday distributions across years.

For quick navigation in cross-referenced tables some pages provide direct links labeled Previous year (common), Next year (Common), Previous year (leap) and Next year (leap). Further reading on weekday cycles and leap rules is recommended for applications that require long-range planning or conversion between calendar systems.