how do I tell my homepod to give the time in the normal 12 hour format

Greetings 08ohtoo, 

Please be sure to double verify that the iOS device or hub your HomePod is set up with also shows a 12 hour format for time. On iOS/iPadOS you can do that in Settings > General > Date & Time. 

If the time is set correctly, you can next try resetting your HomePod. Reset HomePod or HomePod mini

Reset HomePod or HomePod mini to factory settings

To reset your HomePod speaker to its factory settings, first remove it from the Home app, then press the top of HomePod or HomePod mini to reset it.

Remove HomePod or HomePod mini from the Home app

1. Open the Home app on your iPhone, iPad, or Mac that's signed in with the Apple ID that you used to set up HomePod.

2. Tap or click HomePod.

3. Select the Settings icon or scroll down to HomePod settings.

4. Select Reset HomePod.

5. Select Remove Accessory.

Reset HomePod or HomePod mini

1. Unplug HomePod or unplug the power adapter for HomePod mini. Wait 10 seconds, then plug HomePod back in.

2. Wait 10 seconds, then touch your finger to the top of HomePod and hold it there.

3. The white spinning light will turn red. Keep your finger down. 

4. Siri will say that your HomePod is about to reset. When you hear three beeps, you can lift your finger.

Thanks.