Advantages:

More daylight leads to an increase of safety by lowering car accidents.
It can be good for the economy, as an extra hour of daylight increases the number of people shopping after work.
Additionally, an extra hour post-work increases participation in outdoor activities, which betters population health.

Disadvantages:

The 23-hour and 25-hour days generated at the beginning and end of daylight saving time can deregulate people’s sleep schedules, increasing headaches and even an increase in heart attacks.
The deregulation of sleeping times can decrease productivity at work and waste time online due to tiredness.
Time wasted physically changing all the clocks can be considered expensive, especially in the workplace since that time could be used more productively.

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