2027 Calendar — Full Year Grid With US & India Holidays
A planning grid for 2027, 19 months from today (May 27, 2026). 365 days, Jan 1 falls on Friday. Easter is unusually early (Mar 28). Two US federal holidays land on weekends — Juneteenth (Sat Jun 19, observed Fri Jun 18) and Independence Day (Sun Jul 4, observed Mon Jul 5). Diwali Nov 8 (Mon). Republic Day Jan 26 (Tue). Christmas Dec 25 (Sat, observed Fri Dec 24).
Quick Conversion
Formula: days = months × 30.4368 (Gregorian avg)
Full Year 2027
Selected: 2027-01-01
2027 Holiday Reference Table
| Date | Day | Name | Country | Kind |
|---|---|---|---|---|
| 2027-01-01 | Friday | New Year's Day | BOTH | federal |
| 2027-01-18 | Monday | Martin Luther King Jr. Day | US | federal |
| 2027-01-26 | Tuesday | Republic Day (India) | IN | federal |
| 2027-02-15 | Monday | Presidents Day | US | federal |
| 2027-02-16 | Tuesday | Maha Shivaratri | IN | religious |
| 2027-03-22 | Monday | Holi | IN | religious |
| 2027-03-26 | Friday | Good Friday | BOTH | religious |
| 2027-03-28 | Sunday | Easter Sunday | BOTH | religious |
| 2027-05-31 | Monday | Memorial Day | US | federal |
| 2027-06-19 | Saturday | Juneteenth (obs Fri Jun 18) | US | federal |
| 2027-07-04 | Sunday | Independence Day (obs Mon Jul 5) | US | federal |
| 2027-08-15 | Sunday | Independence Day (India) | IN | federal |
| 2027-09-06 | Monday | Labor Day | US | federal |
| 2027-10-02 | Saturday | Gandhi Jayanti | IN | federal |
| 2027-10-11 | Monday | Columbus Day | US | federal |
| 2027-11-08 | Monday | Diwali | IN | religious |
| 2027-11-11 | Thursday | Veterans Day | US | federal |
| 2027-11-25 | Thursday | Thanksgiving | US | federal |
| 2027-12-25 | Saturday | Christmas Day | BOTH | federal |
Calendar Drift — 2026 → 2027 (Doomsday Algorithm)
jan1(2027) = (jan1(2026) + 365) mod 7 = (Thu + 1) = FridayJohn Conway's 1973 Doomsday algorithm picks a "doomsday" weekday per year (the weekday of certain anchor dates like 4/4, 6/6, 8/8, 10/10, 12/12). For 2027, doomsday = Sunday. Memorize doomsdays for the century (2000-2099): Tuesday, Sunday, Friday, Wednesday for 2000, 2001, 2002, 2003 advancing by 1 except at leap years where it advances by 2.
Day-Of-Year Reference (2027)
| Date | DOY | ISO Week | Note |
|---|---|---|---|
| 2027-01-01 | 1 | W53 | Year start |
| 2027-01-26 | 26 | W4 | Republic Day IN |
| 2027-03-28 | 87 | W12 | Easter (early) |
| 2027-05-31 | 151 | W22 | Memorial Day |
| 2027-07-04 | 185 | W26 | Indep. Day (Sun) |
| 2027-08-15 | 227 | W32 | Indep. Day IN |
| 2027-10-02 | 275 | W39 | Gandhi Jayanti |
| 2027-11-08 | 312 | W45 | Diwali |
| 2027-11-25 | 329 | W47 | Thanksgiving |
| 2027-12-25 | 359 | W51 | Christmas (Sat) |
Need a year-picker? Year Calendar or browse 2025 / 2026.
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How To Use the 2027 Calendar — 5 Steps
- Step 1. Scroll through the 12 monthly grids. The amber ribbon at top shows your selected month at a glance.
- Step 2. Click any date to inspect weekday, day-of-year and ISO week.
- Step 3. Note observed-date rules: weekend US federal holidays move per 5 USC 6103(c).
- Step 4. Toggle Print View and File → Print for a clean grid PDF.
- Step 5. Inspected dates auto-save to localStorage history.
A Brief Calendar History (2027 Edition)
In 2026, a McKinsey strategy consultant scoping an 18-month transformation engagement that will end in September 2027 needs a planning grid with both US federal and Indian gazetted holidays already laid out. This page is that artifact, built on the Gregorian Civil calendar — introduced by Pope Gregory XIII in October 1582 — and supplemented with the Indian Saka calendar (adopted March 22, 1957 by the Government of India for parallel official use).
The Julian calendar (Julius Caesar, 45 BCE) had a 365.25-day year — 11 minutes too long. By 1582 it had drifted 10 days from the solar year. Gregory's fix: every century year (1700, 1800, 1900) is NOT a leap year UNLESS divisible by 400 (so 2000 was). By that rule, 2027 is not a leap year. The next leap year is 2028. 2027 starts on a Friday because 2026 (also non-leap) starts Thursday and 365 mod 7 = 1.
John Conway's 1973 Doomsday algorithm and Christian Zeller's 1882 congruence compute weekday from date with no lookup table. For 2027, Conway's doomsday is Sunday — the weekday of Apr 4, Jun 6, Aug 8, Oct 10, Dec 12, the last day of February (which is Feb 28 = Sun), Jan 3, and similar anchor dates.
US federal holidays are codified in 5 U.S.C. 6103. Per 6103(c), holidays falling on Saturday are observed on the preceding Friday; Sunday holidays on the following Monday. In 2027 this matters twice: Juneteenth (Jun 19 = Sat, observed Fri Jun 18) and Independence Day (Jul 4 = Sun, observed Mon Jul 5). Christmas (Dec 25 = Sat) is observed Friday Dec 24. The Juneteenth National Independence Day Act (signed June 17, 2021) added Jun 19 as the most recent federal holiday.
Easter Sunday 2027 falls on March 28 — one of the earliest Easters of the 21st century. The Computus (Easter algorithm), fixed at the First Council of Nicaea in 325 CE, places Easter on the first Sunday after the Paschal full moon (the ecclesiastical full moon on or after March 21). In 2027 the Paschal full moon is Wednesday March 24, so Easter is the following Sunday Mar 28. Good Friday is March 26.
ISO 8601, ratified in 1988, defines the canonical YYYY-MM-DD date format and Monday-start week numbering. For 2027 ISO week 1 begins Mon Jan 4 (because Jan 1 is Fri, and week 1 is the week containing the first Thursday, which is Jan 7). January 1, 2, 3 of 2027 belong to ISO week 53 of 2026. 2027 itself has 52 ISO weeks.
For shorter-range tools see Days Until or Days Between. For full lunar data, Moon Phase.
Trusted by consultants, PhD candidates, school admins and event planners
“We plan 18-month engagements that span calendar boundaries. Having 2027 already laid out with US and India holidays color-coded saves us a 30-minute spreadsheet build at every kickoff.”
“The Computus-derived early Easter for 2027 (Mar 28) is a great teaching example — I bookmark this page for my Trinity Term seminar on calendar reform.”
“Forward-planning Auckland term breaks against US and Indian holidays takes 30 seconds with this grid. Color coding is brilliant for at-a-glance scanning.”
“I book international tasting weekends 12-18 months out. The 2027 grid with observed-date logic for US weekend holidays (Jul 4 -> Mon Jul 5) is exactly the precision I need.”
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