otsuka

How to replan a travel day when it rains

Most of a wet day is moving things, not dropping them. Six steps, in order.

1. Sort the day into outdoors and indoors

A garden, a viewpoint, a walk through a quarter: outdoors. A museum, a market hall, lunch: indoors. A temple can be either, so check how much of it is a garden.

2. Swap the day, don't cancel it

On a trip of three days or more, one day usually has more indoors on it than the others. Trade the two, and the dry day gets the walks back.

3. Bring indoor things forward

If no day is indoors enough, take a museum from later in the trip and put it where the walk was. The walk takes the museum's old hours.

4. Keep the meals where they are

Restaurants are indoors already, and a meal moved to another day lands on top of that day's own.

5. Mind the edges of the day

Nothing new in the evening of the day you fly home, and nothing after a place closes.

6. Move things, don't delete them

What you didn't get to goes on a list for later in the trip. If the sky clears at four, it's still there.

In otsuka

On the day, tap Want to reschedule?, then It's raining. otsuka does the first four steps: it moves what's outdoors to another day of the trip, fills the freed hours with up to three indoor things, from later in the same city first, then from your wishlist, and leaves the meals alone. You see where each thing lands before anything moves, and one tap undoes it. To trade two whole days, tap the round button next to a day's name and pick Swap with another day.

Coming to the App Store

iPhone only. A subscription: $39.99 a year, or $7.99 a month with the first month at $0.99 for new subscribers. There is no free version.

The same, city by city