Google Calendar embedded iframe shows previous day instead of current date when using DAY mode

I’m trying to embed a Google Calendar in my website using an iframe with DAY mode, but I’m running into a weird issue.

The Problem

When I set up the iframe with mode=DAY, the calendar shows yesterday’s date instead of today. For example, if today is December 27th, 2023, the calendar displays December 26th instead.

What I Need

I want to display the current day’s view in DAY mode (not the agenda view). The agenda mode works fine and shows the correct date, but I specifically need the DAY view format.

What I Found

I checked the page source and noticed that the preloadStart and preloadEnd variables are getting set to the previous day. So when today should be 20231227, these variables show 20231226 instead.

My Question

Has anyone encountered this date offset issue with Google Calendar embeds? Is there a way to force the DAY mode to display today’s date correctly, or is this a known bug with the embedding feature?

I’ve seen this before - it’s a timezone mismatch. Your calendar embed is probably using a different timezone than your local one, which throws off the days. First, check your Google Calendar settings and make sure the timezone matches where your website audience is located. When you create the embed code, double-check you’re generating it from the right timezone setting. Try clearing your browser cache and making a fresh embed code too - Google sometimes caches old timezone preferences. Those preloadStart and preloadEnd variables are handled by Google’s backend timezone logic, so once you fix the timezone issue, they’ll sort themselves out.