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Wedding Countdown Calendar

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Wedding Countdown Calendar

A printable planning timeline for wedding dates, milestone countdowns, supplier reminders, guest checkpoints and browser print beside the CalculationTime clockface.

Inputs, result, proof and time.

Use the instrument above, then check the calculation record, assumptions and related tools below.

Printable wedding countdown calendar

Mira and Theo Wedding Countdown

Mon, 21 Sept 2026 to Sun, 17 Oct 2027
Wedding date
Sat, 18 Sept 2027
Weeks until day
51
Visible milestones
5
Vendor markers
1
Weeks shown56
Guest markers1
Reminder lead14 days
Plan modeessential
Countdown week 10 markers
Mon, 21 Sept
Tue, 22 Sept
Wed, 23 Sept
Thu, 24 Sept
Fri, 25 Sept
Sat, 26 Sept
Sun, 27 Sept
Countdown week 20 markers
Mon, 28 Sept
Tue, 29 Sept
Wed, 30 Sept
Thu, 01 Oct
Fri, 02 Oct
Sat, 03 Oct
Sun, 04 Oct
Countdown week 30 markers
Mon, 05 Oct
Tue, 06 Oct
Wed, 07 Oct
Thu, 08 Oct
Fri, 09 Oct
Sat, 10 Oct
Sun, 11 Oct
Countdown week 40 markers
Mon, 12 Oct
Tue, 13 Oct
Wed, 14 Oct
Thu, 15 Oct
Fri, 16 Oct
Sat, 17 Oct
Sun, 18 Oct
Countdown week 50 markers
Mon, 19 Oct
Tue, 20 Oct
Wed, 21 Oct
Thu, 22 Oct
Fri, 23 Oct
Sat, 24 Oct
Sun, 25 Oct
Countdown week 60 markers
Mon, 26 Oct
Tue, 27 Oct
Wed, 28 Oct
Thu, 29 Oct
Fri, 30 Oct
Sat, 31 Oct
Sun, 01 Nov
Countdown week 70 markers
Mon, 02 Nov
Tue, 03 Nov
Wed, 04 Nov
Thu, 05 Nov
Fri, 06 Nov
Sat, 07 Nov
Sun, 08 Nov
Countdown week 80 markers
Mon, 09 Nov
Tue, 10 Nov
Wed, 11 Nov
Thu, 12 Nov
Fri, 13 Nov
Sat, 14 Nov
Sun, 15 Nov
Countdown week 90 markers
Mon, 16 Nov
Tue, 17 Nov
Wed, 18 Nov
Thu, 19 Nov
Fri, 20 Nov
Sat, 21 Nov
Sun, 22 Nov
Countdown week 100 markers
Mon, 23 Nov
Tue, 24 Nov
Wed, 25 Nov
Thu, 26 Nov
Fri, 27 Nov
Sat, 28 Nov
Sun, 29 Nov
Countdown week 110 markers
Mon, 30 Nov
Tue, 01 Dec
Wed, 02 Dec
Thu, 03 Dec
Fri, 04 Dec
Sat, 05 Dec
Sun, 06 Dec
Countdown week 120 markers
Mon, 07 Dec
Tue, 08 Dec
Wed, 09 Dec
Thu, 10 Dec
Fri, 11 Dec
Sat, 12 Dec
Sun, 13 Dec
Countdown week 130 markers
Mon, 14 Dec
Tue, 15 Dec
Wed, 16 Dec
Thu, 17 Dec
Fri, 18 Dec
Sat, 19 Dec
Sun, 20 Dec
Countdown week 140 markers
Mon, 21 Dec
Tue, 22 Dec
Wed, 23 Dec
Thu, 24 Dec
Fri, 25 Dec
Sat, 26 Dec
Sun, 27 Dec
Countdown week 150 markers
Mon, 28 Dec
Tue, 29 Dec
Wed, 30 Dec
Thu, 31 Dec
Fri, 01 Jan
Sat, 02 Jan
Sun, 03 Jan
Countdown week 160 markers
Mon, 04 Jan
Tue, 05 Jan
Wed, 06 Jan
Thu, 07 Jan
Fri, 08 Jan
Sat, 09 Jan
Sun, 10 Jan
Countdown week 170 markers
Mon, 11 Jan
Tue, 12 Jan
Wed, 13 Jan
Thu, 14 Jan
Fri, 15 Jan
Sat, 16 Jan
Sun, 17 Jan
Countdown week 180 markers
Mon, 18 Jan
Tue, 19 Jan
Wed, 20 Jan
Thu, 21 Jan
Fri, 22 Jan
Sat, 23 Jan
Sun, 24 Jan
Countdown week 190 markers
Mon, 25 Jan
Tue, 26 Jan
Wed, 27 Jan
Thu, 28 Jan
Fri, 29 Jan
Sat, 30 Jan
Sun, 31 Jan
Countdown week 200 markers
Mon, 01 Feb
Tue, 02 Feb
Wed, 03 Feb
Thu, 04 Feb
Fri, 05 Feb
Sat, 06 Feb
Sun, 07 Feb
Countdown week 210 markers
Mon, 08 Feb
Tue, 09 Feb
Wed, 10 Feb
Thu, 11 Feb
Fri, 12 Feb
Sat, 13 Feb
Sun, 14 Feb
Countdown week 220 markers
Mon, 15 Feb
Tue, 16 Feb
Wed, 17 Feb
Thu, 18 Feb
Fri, 19 Feb
Sat, 20 Feb
Sun, 21 Feb
Countdown week 230 markers
Mon, 22 Feb
Tue, 23 Feb
Wed, 24 Feb
Thu, 25 Feb
Fri, 26 Feb
Sat, 27 Feb
Sun, 28 Feb
Countdown week 240 markers
Mon, 01 Mar
Tue, 02 Mar
Wed, 03 Mar
Thu, 04 Mar
Fri, 05 Mar
Sat, 06 Mar
Sun, 07 Mar
Countdown week 250 markers
Mon, 08 Mar
Tue, 09 Mar
Wed, 10 Mar
Thu, 11 Mar
Fri, 12 Mar
Sat, 13 Mar
Sun, 14 Mar
Countdown week 261 markers
Mon, 15 Mar
Tue, 16 Mar
Wed, 17 Mar
Thu, 18 Mar
Fri, 19 MarSix months out183 days before. Reminder Fri, 05 Mar. Confirm key suppliers, ceremony structure and major bookings.
Sat, 20 Mar
Sun, 21 Mar
Countdown week 270 markers
Mon, 22 Mar
Tue, 23 Mar
Wed, 24 Mar
Thu, 25 Mar
Fri, 26 Mar
Sat, 27 Mar
Sun, 28 Mar
Countdown week 280 markers
Mon, 29 Mar
Tue, 30 Mar
Wed, 31 Mar
Thu, 01 Apr
Fri, 02 Apr
Sat, 03 Apr
Sun, 04 Apr
Countdown week 290 markers
Mon, 05 Apr
Tue, 06 Apr
Wed, 07 Apr
Thu, 08 Apr
Fri, 09 Apr
Sat, 10 Apr
Sun, 11 Apr
Countdown week 300 markers
Mon, 12 Apr
Tue, 13 Apr
Wed, 14 Apr
Thu, 15 Apr
Fri, 16 Apr
Sat, 17 Apr
Sun, 18 Apr
Countdown week 310 markers
Mon, 19 Apr
Tue, 20 Apr
Wed, 21 Apr
Thu, 22 Apr
Fri, 23 Apr
Sat, 24 Apr
Sun, 25 Apr
Countdown week 320 markers
Mon, 26 Apr
Tue, 27 Apr
Wed, 28 Apr
Thu, 29 Apr
Fri, 30 Apr
Sat, 01 May
Sun, 02 May
Countdown week 330 markers
Mon, 03 May
Tue, 04 May
Wed, 05 May
Thu, 06 May
Fri, 07 May
Sat, 08 May
Sun, 09 May
Countdown week 340 markers
Mon, 10 May
Tue, 11 May
Wed, 12 May
Thu, 13 May
Fri, 14 May
Sat, 15 May
Sun, 16 May
Countdown week 350 markers
Mon, 17 May
Tue, 18 May
Wed, 19 May
Thu, 20 May
Fri, 21 May
Sat, 22 May
Sun, 23 May
Countdown week 360 markers
Mon, 24 May
Tue, 25 May
Wed, 26 May
Thu, 27 May
Fri, 28 May
Sat, 29 May
Sun, 30 May
Countdown week 370 markers
Mon, 31 May
Tue, 01 June
Wed, 02 June
Thu, 03 June
Fri, 04 June
Sat, 05 June
Sun, 06 June
Countdown week 380 markers
Mon, 07 June
Tue, 08 June
Wed, 09 June
Thu, 10 June
Fri, 11 June
Sat, 12 June
Sun, 13 June
Countdown week 391 markers
Mon, 14 June
Tue, 15 June
Wed, 16 June
Thu, 17 June
Fri, 18 June
Sat, 19 JuneThree months out91 days before. Reminder Sat, 05 June. Review guest list, invitations, travel and accommodation details.
Sun, 20 June
Countdown week 400 markers
Mon, 21 June
Tue, 22 June
Wed, 23 June
Thu, 24 June
Fri, 25 June
Sat, 26 June
Sun, 27 June
Countdown week 410 markers
Mon, 28 June
Tue, 29 June
Wed, 30 June
Thu, 01 July
Fri, 02 July
Sat, 03 July
Sun, 04 July
Countdown week 420 markers
Mon, 05 July
Tue, 06 July
Wed, 07 July
Thu, 08 July
Fri, 09 July
Sat, 10 July
Sun, 11 July
Countdown week 430 markers
Mon, 12 July
Tue, 13 July
Wed, 14 July
Thu, 15 July
Fri, 16 July
Sat, 17 July
Sun, 18 July
Countdown week 440 markers
Mon, 19 July
Tue, 20 July
Wed, 21 July
Thu, 22 July
Fri, 23 July
Sat, 24 July
Sun, 25 July
Countdown week 450 markers
Mon, 26 July
Tue, 27 July
Wed, 28 July
Thu, 29 July
Fri, 30 July
Sat, 31 July
Sun, 01 Aug
Countdown week 460 markers
Mon, 02 Aug
Tue, 03 Aug
Wed, 04 Aug
Thu, 05 Aug
Fri, 06 Aug
Sat, 07 Aug
Sun, 08 Aug
Countdown week 470 markers
Mon, 09 Aug
Tue, 10 Aug
Wed, 11 Aug
Thu, 12 Aug
Fri, 13 Aug
Sat, 14 Aug
Sun, 15 Aug
Countdown week 481 markers
Mon, 16 Aug
Tue, 17 Aug
Wed, 18 Aug
Thu, 19 AugOne month out30 days before. Reminder Thu, 05 Aug. Check paperwork, vows, running sheet and final payment dates.
Fri, 20 Aug
Sat, 21 Aug
Sun, 22 Aug
Countdown week 490 markers
Mon, 23 Aug
Tue, 24 Aug
Wed, 25 Aug
Thu, 26 Aug
Fri, 27 Aug
Sat, 28 Aug
Sun, 29 Aug
Countdown week 500 markers
Mon, 30 Aug
Tue, 31 Aug
Wed, 01 Sept
Thu, 02 Sept
Fri, 03 Sept
Sat, 04 Sept
Sun, 05 Sept
Countdown week 511 markers
Mon, 06 Sept
Tue, 07 Sept
Wed, 08 Sept
Thu, 09 Sept
Fri, 10 Sept
Sat, 11 SeptOne week out7 days before. Reminder Sat, 28 Aug. Final confirmations, packing list and day-before handoffs.
Sun, 12 Sept
Countdown week 521 markers
Mon, 13 Sept
Tue, 14 Sept
Wed, 15 Sept
Thu, 16 Sept
Fri, 17 Sept
Sat, 18 SeptWedding dayWedding day. Reminder Sat, 04 Sept. Ceremony, celebration and named handoff contacts.
Sun, 19 Sept
Countdown week 530 markers
Mon, 20 Sept
Tue, 21 Sept
Wed, 22 Sept
Thu, 23 Sept
Fri, 24 Sept
Sat, 25 Sept
Sun, 26 Sept
Countdown week 540 markers
Mon, 27 Sept
Tue, 28 Sept
Wed, 29 Sept
Thu, 30 Sept
Fri, 01 Oct
Sat, 02 Oct
Sun, 03 Oct
Countdown week 550 markers
Mon, 04 Oct
Tue, 05 Oct
Wed, 06 Oct
Thu, 07 Oct
Fri, 08 Oct
Sat, 09 Oct
Sun, 10 Oct
Countdown week 560 markers
Mon, 11 Oct
Tue, 12 Oct
Wed, 13 Oct
Thu, 14 Oct
Fri, 15 Oct
Sat, 16 Oct
Sun, 17 Oct
Six months outFri, 19 Mar 2027 - 183 days beforeReminder: Fri, 05 Mar 2027. Confirm key suppliers, ceremony structure and major bookings.
Three months outSat, 19 June 2027 - 91 days beforeReminder: Sat, 05 June 2027. Review guest list, invitations, travel and accommodation details.
One month outThu, 19 Aug 2027 - 30 days beforeReminder: Thu, 05 Aug 2027. Check paperwork, vows, running sheet and final payment dates.
One week outSat, 11 Sept 2027 - 7 days beforeReminder: Sat, 28 Aug 2027. Final confirmations, packing list and day-before handoffs.
Wedding daySat, 18 Sept 2027 - wedding dayReminder: Sat, 04 Sept 2027. Ceremony, celebration and named handoff contacts.

Assumptions

Countdown dates are calculated by subtracting fixed day offsets from the wedding date. The printable grid starts on Monday Mon, 21 Sept 2026. 56 weeks are shown. 14 reminder days are subtracted from each visible milestone.

Notes

Use this sheet for planning conversations, supplier handoffs and family reminders. Confirm legal paperwork, venue rules, contracts, travel, deposits and local requirements with the relevant authority or supplier.

Limits

This is civil date arithmetic for planning. It is not legal advice, vendor contract review, event insurance guidance, immigration advice, travel advice or official marriage-registration guidance.

Method

The planner subtracts milestone offsets from the wedding date

The calendar uses local Gregorian dates from browser date inputs. Each planning checkpoint is a fixed day offset before or after the wedding date, and each reminder is calculated by subtracting the selected reminder lead time.

Milestone sets

Essential mode keeps the core countdown. Full mode adds guest and planning windows. Supplier mode emphasizes contracts, permits, run sheets and confirmation handoffs.

Print path

The print button opens browser print. The print stylesheet keeps the header, summary, week grid, milestone list, assumptions and limits.

Limits

This is not legal advice, contract review, insurance advice, visa guidance, travel advice, venue policy or official marriage-registration guidance.

Source Notes

Wedding planning dates are mechanical; requirements are local

CalculationTime uses browser Date objects for local Gregorian date stepping and HTML date inputs for YYYY-MM-DD values. Planning checkpoints are transparent worksheet assumptions only; marriage notice periods, permits, venue rules, supplier terms and travel requirements must be confirmed from local authorities and signed agreements.

ReferencesECMAScript Date objectsHTML date inputAustralian Attorney-General's Department marriage guidance