All tools › The journey
Jet lag planner
A day-by-day shift before a flight, with the light that makes it work.
It runs entirely in this browser tab: nothing you type is uploaded, and it makes no request of any kind.
Settings
- Direction of travel
- An hour later is easy; an hour earlier is not, which is why east is harder. Choices: Eastwards, Westwards.
- Shift a day
- An hour a day is what most people manage without wrecking the week before. A number from 30 to 120.
- Add the light advice
- Light is what actually moves a body clock; the rest is comfort.
- Add the meal advice
- Eating on the new clock helps a little and is easy to do.
How to use it
- Paste your text into the box above, or open a file.
- Adjust the settings beside it until the result is what you wanted.
- Copy the result, or save it as a file. The result updates as you type.
Questions
- Where do the coverage rates and densities come from?
- They are the published typical figures — what a tin of emulsion claims, what a cubic metre of dry sand weighs, what a bag of screed covers. They are printed on the result so you can compare them with the bag in front of you, and the bag wins.
- Is the ten per cent reserve part of the calculation?
- No, and that is why it is a setting. It is a trade convention for breakage and offcuts, and the quantity without it is shown on the same result, so you can order either.
- Can I use this instead of a heating engineer or a structural check?
- No. A heat loss from six fields is an order of magnitude, not a design: a standard calculation takes every room, orientation and junction separately. The snow tool weighs snow; whether your roof carries it is on its drawings.
- Does anything I type here leave the page?
- No. There is no account, no server and no network request. What you type stays in this tab, and in the link if you choose to share one.
Other tools for the journey
All thirty-six tools