Golden Week is not a fixed-length holiday. Four dates are fixed by Japanese statute — 29 April (Showa Day), 3 May (Constitution Memorial Day), 4 May (Greenery Day) and 5 May (Children’s Day) — and everything else about the break depends on which weekdays those dates happen to fall on that year. In 2027 the holidays are Thursday 29 April and Monday 3 May to Wednesday 5 May, with 30 April an ordinary working Friday in between. In 2028 they are Saturday 29 April and Wednesday 3 May to Friday 5 May.
The practical consequence is a booking one, and it is exact rather than approximate. JR East states that tickets can be purchased from 10:00 Japan time one month before the boarding date. Because the holiday dates are fixed by law, you can calculate the precise moment reserved seats for each Golden Week travel day become available, months ahead of needing to act.
For a trip departing on Saturday 1 May 2027, that moment is 10:00 Japan time on Thursday 1 April 2027. Not “early April”. Not “about a month before”.
The four dates are set by statute, not by the calendar
Japan’s Cabinet Office publishes the national holidays and their statutory dates. The four that make up Golden Week are Showa Day on 29 April, Constitution Memorial Day on 3 May, Greenery Day on 4 May and Children’s Day on 5 May.
These are calendar dates, not “the first Monday of” arrangements. That is why Golden Week does not move to create a tidy long weekend the way some public holidays elsewhere do. The dates stay put and the weekdays rotate around them.
It also means the name is misleading if you read it literally. There is no statutory “Golden Week” — there is a cluster of four dated holidays that sometimes falls close enough together, and close enough to a weekend, to behave like one long break.
The gap days are what decide whether it is three days or seven
The interesting dates in Golden Week are the ones that are not holidays.
Between 29 April and 3 May there are three calendar days — 30 April, 1 May and 2 May — that carry no statutory holiday at all. Whether the break reads as one long stretch or as two separate short ones depends entirely on how many of those three land on a weekend.
In 2027, 1 and 2 May are Saturday and Sunday, and only 30 April is a working day. A single day of leave on Friday 30 April therefore joins Thursday 29 April to the Monday-to-Wednesday holiday block and produces seven consecutive days off, from 29 April to 5 May.
In 2028 the arithmetic gives a different answer. 29 April is a Saturday and 30 April a Sunday, so the first holiday is absorbed into the weekend and delivers nothing extra. 1 and 2 May are a working Monday and Tuesday. The break that year is Wednesday 3 May to Friday 5 May, extended by the following weekend into a five-day stretch that starts mid-week.
This is worth working out before you choose your dates, because it changes where the working days sit. In a seven-day version there is one working day at the front of the block; in a five-day version that begins on a Wednesday there are two working days before it starts.
Golden Week 2027 and 2028, day by day
Every entry below follows from the statutory dates above and the calendar for that year.
| Date | 2027 | 2028 |
|---|---|---|
| 29 April | Thursday — holiday | Saturday — holiday |
| 30 April | Friday — working day | Sunday |
| 1 May | Saturday | Monday — working day |
| 2 May | Sunday | Tuesday — working day |
| 3 May | Monday — holiday | Wednesday — holiday |
| 4 May | Tuesday — holiday | Thursday — holiday |
| 5 May | Wednesday — holiday | Friday — holiday |
| 6 May | Thursday — working day | Saturday |
Read down the 2027 column and the shape is one continuous run interrupted only by 30 April. Read down 2028 and it is a compact three-holiday block from Wednesday, with two ordinary working days sitting where 2027 has a weekend.
The substitute-holiday rule only fires on a Sunday
Japan has a substitute-holiday provision, and it is narrower than most visitors assume. The Cabinet Office describes it as applying when a national holiday falls on a Sunday: the nearest following day that is not itself a national holiday becomes a holiday instead.
Two things follow. A holiday landing on a Saturday generates no substitute — which is exactly what happens to 29 April in 2028, and why that year’s Golden Week is shorter than the date list suggests. And a holiday landing on a Sunday pushes forward rather than backward, adding a Monday.
Neither 2027 nor 2028 has a Golden Week holiday falling on a Sunday, so neither year gains a substitute day. If you are checking a later year, apply the rule to 3, 4 and 5 May in that order before assuming the block length.
Reserved seats open at 10:00 Japan time, one month before you board
JR East’s own FAQ states that tickets can be purchased from 10:00 Japan time one month before the boarding date, whether you are buying from outside Japan on its official site or in Japan at ticket counters and machines.
Because that window is tied to the boarding date rather than to a general release, each Golden Week travel day has its own opening moment. For 2027 the ones that matter are these.
| Travel date (2027) | Reserved seats open |
|---|---|
| Thu 29 April | Mon 29 March, 10:00 JST |
| Fri 30 April | Tue 30 March, 10:00 JST |
| Sat 1 May | Thu 1 April, 10:00 JST |
| Sun 2 May | Fri 2 April, 10:00 JST |
| Mon 3 May | Sat 3 April, 10:00 JST |
| Tue 4 May | Sun 4 April, 10:00 JST |
| Wed 5 May | Mon 5 April, 10:00 JST |
| Thu 6 May | Tue 6 April, 10:00 JST |
Japan is UTC+9 and does not use daylight saving, so 10:00 in Tokyo is a different local hour for you depending on where you are and on whether your own country has changed its clocks by then. Work that conversion out in advance rather than on the morning itself.
The one-month rule also explains a common frustration. If you are planning a return journey, the outbound and return legs do not become bookable together — each opens one month before its own boarding date. A trip out on 1 May and back on 5 May has two separate opening moments, four days apart, and you cannot secure both in a single sitting.
How to use all of this when choosing dates
The four statutory dates give you the only fixed points, so build outward from them.
If your dates are flexible, note which days inside the block are ordinary working days rather than statutory holidays. In 2027 that is Friday 30 April; in 2028 it is Monday 1 and Tuesday 2 May. Those days are not national holidays, so they are the ones on which normal weekday services and office-hour opening apply.
If your dates are not flexible and they fall on the holidays themselves, the answer is not to travel differently but to book at the moment the window opens rather than a few days later. The window is public, exact and the same for everyone: 10:00 Japan time, one month before boarding.
And if you are reading this well before either year, note that the calculation is the same for any year. Take 29 April, 3 May, 4 May and 5 May; check which fall on a Sunday and add the substitute day if so; look at what the remaining gap days are doing; then subtract one month from each travel date to get your booking moment.
Sources Checked
Cabinet Office of Japan — national holidays
Confirmed the statutory dates and names of Showa Day (29 April), Constitution Memorial Day (3 May), Greenery Day (4 May) and Children’s Day (5 May), and the substitute-holiday provision under which a national holiday falling on a Sunday is replaced by the nearest following day that is not itself a national holiday.
https://www8.cao.go.jp/chosei/shukujitsu/gaiyou.html
JR East — official FAQ for overseas visitors
Confirmed that tickets can be purchased from 10:00 Japan time one month before the boarding date, both from JR East’s official site and, after arrival, at ticket counters and vending machines.
https://www.jreast.co.jp/en/multi/faq/
The 2027 and 2028 weekday assignments and the derived booking-open dates in the tables above are arithmetic from the statutory dates and the calendar; they are not taken from a third-party listing.
Last updated: September 2026
