# Comment to Impact of Daylight Saving Time on circadian timing system: An expert statement

## TL;DR

This paper critically discusses how Daylight Saving Time's seasonal features and societal implications are overlooked in existing research on its impact on circadian rhythms.

## Contribution

It emphasizes the importance of considering DST's seasonal and societal context rather than treating it as a simple one-hour change.

## Key findings

- DST is a seasonal societal adaptation, not just a time change.
- Seasonal features of DST are often ignored in circadian studies.
- DST's impact should be analyzed in the context of seasonality and societal practices.

## Abstract

1000 words comment on a paper published in the European Journal of Internal Medicine by a panel of experts. My point is authors address the magnitude of the change (one hour) but fail to consider in any way its seasonal features. DST is not a random change of an hour but an specific change on specific dates and in a specific direction ---spring forward, fall back---. DST is the way many contemporary societies handles the seasonality. The way many contemporary societies turn a nonseasonal clock (the mechanical clock) into a seasonal clock.