Your site’s timezone is set to Coordinated Universal Time, UTC by default, which is in London, UK.
If you live in a different area of the world you will likely want to change this option.
You can change the timezone in your site’s General Settings (in a web browser).
For sites hosted at WordPress.com:
1. Open your site’s General Settings in a web browser
2. Find the Site Timezone setting
3. Select your timezone or a city in the same timezone
For sites hosted elsewhere:
1. Open your site’s dashboard in a web browser
2. Go to Settings > General to find the Timezone setting
3. Select your timezone or a city in the same timezone