Linked from

The 91 pages that link to Gregorian calendar, each with the reason it gives.

• BirthdayRelated: Most modern birthday dates are counted within this calendar system.

• Christopher ClaviusBroader topic: This reform was the central subject of Clavius’s explanations and defenses.

• Ethiopian calendarCompared with: Its dates and year numbers provide the common comparison for Ethiopian dates.

• FebruaryNarrower topic: February’s modern dates and leap-year rules belong to this calendar.

• 1985Narrower topic: 1985's dates follow this calendar's rules for months and leap years.

• Japanese New YearRelated: Its adoption fixed Japanese New Year on January 1 rather than the old lunar date.

• MondayRelated: Gregorian dates identify Monday as a recurring weekday without making it the calendar’s first day.

• SaturdayRelated: It supplies the civil calendar in which Saturday appears as a recurring weekday.

• April Fools' DayNarrower topic: The calendar reform is central to the best-known explanation of the custom's origins.

• Days of the weekRelated: Its date rules determine which weekday each Gregorian calendar date receives.

• 18th centuryRelated: Its numbering makes this century span 1701 through 1800, not 1700 through 1799.

• Astronomical year numberingRelated: Astronomical year numbers can label Gregorian dates without changing the calendar’s months or days.

• FridayRelated: Its civil dates are organized into recurring weeks that include Friday.

• NinjuCompared with: Modern year numbers for Ninju are conversions from a later calendar system.

• Pohela BoishakhCompared with: Its January year start contrasts with the Bengali calendar's spring New Year.

• 2020sRelated: Its year numbering and calendar dates define the 2020s’ exact boundaries.

• 21st centuryNarrower topic: Its year numbering defines the century's exact boundaries.

• AprilNarrower topic: April’s current date sequence belongs to this calendar.

• Day (time unit)Related: Its dates rely on civil days as the basic units of calendar reckoning.

• DecemberNarrower topic: It defines December as the year’s twelfth month and fixes its 31-day length.

• History of calendarsBroader topic: Its reform corrected accumulated seasonal drift with a more accurate leap-year pattern.

• Holocene calendarRelated: The proposal preserves its dates and adds 10,000 years.

• JulyNarrower topic: July is defined today as its seventh month.

• JuneNarrower topic: June occupies the sixth position in this calendar’s twelve-month year.

• OctoberNarrower topic: Its month sequence gives October its current tenth position.

• SetsubunCompared with: Its fixed dates contrast with Setsubun’s variable date under the lunisolar calendar.

• Shaka eraCompared with: Converting Shaka dates requires accounting for its different epoch and calendar structure.

• TanabataCompared with: Many modern Tanabata events use July dates instead of the traditional lunar date.

• Tenpyō-kanpōCompared with: Modern dates translate the era’s 749 chronology into a different calendar system.

• TentokuCompared with: Tentoku’s traditional dates require conversion to the Gregorian calendar for modern comparison.

• 19th centuryNarrower topic: Its year numbering defines the century’s stated dates.

• Ante Christum natumNarrower topic: It is the calendar in which this year-numbering convention is commonly encountered.

• Hijri eraCompared with: Its solar years show why Hijri dates move earlier across Gregorian seasons.

• JōheiCompared with: Modern summaries map Jōhei’s traditional dates onto Gregorian years.

• Juche calendarRelated: North Korean dates retain Gregorian months and days alongside Juche year numbers.

• New YearRelated: Its year begins on January 1, the date associated with this observance.

• Phantom time conspiracy theoryRelated: Illig connects calendar reform to his claim that chronology contains an artificial gap.

• Ten'enCompared with: Gregorian years provide the modern dates commonly paired with Ten'en years.

• TenbunCompared with: Tenbun’s year boundaries do not align simply with Gregorian calendar years.

• TengyōCompared with: Modern date equivalents for Tengyō are usually expressed in this calendar.

• Year (calendar)Narrower topic: Its rules define the length of most modern civil calendar years.