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How the year changes your sleep
How the year changes your sleep: week by week: how much light the city gets and at what hour, what the population's bedtime and sleep length actually do…
This launch guide maps the topic, the source base and the practical questions. Check the linked official authority before acting on a rule, deadline, price or safety requirement.
What this guide covers
Week by week: how much light the city gets and at what hour, what the population's bedtime and sleep length actually do across the year in national time-use surveys, why waking is worst in the weeks either side of the solstice rather than in the coldest ones, the two clock-change weeks, the white-night problem in June, and what has evidence behind it for each — light timing, blackout, temperature, exercise hour. A focused example is "week 46: the hardest mornings of the year".
How to use it
Use How the year changes your sleep to compare stable place facts and official facilities. Live opening, access and disruption information should always be confirmed with the operator before travel.
The page keeps the main question, its evidence base and its limits together in one canonical place. That makes it useful as a quick orientation and avoids splitting a broad subject into shallow pages before each narrower answer has enough verified material of its own.
Search vocabulary in four languages
Terminology changes across borders. These are example phrases people use for the same subject in Estonian, Finnish, Russian and English; they are included as a practical vocabulary aid, not as hidden keywords.
| Language | Example phrase |
|---|---|
| Estonian | miks talvel tahab rohkem magada |
| Finnish | miksi talvella väsyttää enemmän |
| Russian | почему зимой хочется больше спать |
| English | do we sleep more in winter |
Evidence and provenance
The evidence map below records the primary, official or openly licensed material chosen for this guide. It is deliberately visible so a reader can tell the difference between a rule published by an authority, a measured dataset and an editorial explanation.
Source: national time-use surveys from Statistics Estonia and Statistics Finland (open), published studies on seasonality of sleep duration and timing (cite), computed daylight. · checked 2026-09-09
Source names are preserved even where an authority changes its web address. No figure is added to this launch page unless it is already present in the cited source description or can be computed from a named dataset.
Scope and boundaries
/winter is light therapy and mood and /chronotype is the questionnaire; this is the calendar of the sleeping year, week by week.
Why it belongs on TempoLife
the apex sleep calculator.
Frequently asked questions
What does this guide cover?
Week by week: how much light the city gets and at what hour, what the population's bedtime and sleep length actually do across the year in national time-use surveys, why waking is worst in the weeks either side of the solstice rather than in the coldest ones, the two clock-change weeks, the white-night problem in June, and what has evidence behind it for each — light timing, blackout, temperature, exercise hour. A focused example is "week 46: the hardest mornings of the year".
What evidence does it use?
national time-use surveys from Statistics Estonia and Statistics Finland (open), published studies on seasonality of sleep duration and timing (cite), computed daylight.
Where does this guide stop?
/winter is light therapy and mood and /chronotype is the questionnaire; this is the calendar of the sleeping year, week by week.
Turn the reference into a routine
TempoLife brings food, movement, sleep and everyday health habits into one private place when you want to track what happens next.