Why does SwiftUI Text(date, style: .relative) show the same duration for different dates?

I’m using SwiftUI’s Text(_:style:) with the .relative style to show how long ago a date occurred. According to the docs:

A style displaying a date as relative to now.

I expected it to show the precise difference between a past date and the current date. However, I noticed that two dates that are 3 days apart both display the same relative string under certain conditions.

Code snippet to reproduce- (using GMT time zone and the system calendar) IMPORTANT: To reproduce this, set your Mac’s system clock to 8 September 2025, 3:00 AM. SwiftUI’s relative style uses the current system time as its reference point, so changing the clock is necessary to see the behavior.

Settings

• Mac is set to Central European Time zone (but this behaviour was also reproduced by one of my app's users in the US.)
• Mac OS Sequoia 15.5
• XCode 16.4
• tested on an iOS Simulator and a real iPhone both running iOS 18.5

struct TestDateView: View {
    
    var body: some View {
        // 8. July 10AM to 8. September 3AM = Shows 2 months 2 days
        let startDate1: Date = Calendar.current.date(from: .init(calendar: .current, timeZone: .gmt,
                                                                 year: 2025, month: 7, day: 8, hour: 10, minute: 0, second: 0))!
        // 5. July 10AM to 8. September 3AM = Shows 2 months 2 days
        let startDate2: Date = Calendar.current.date(from: .init(calendar: .current, timeZone: .gmt,
                                                                 year: 2025, month: 7, day: 5, hour: 10, minute: 0, second: 0))!
        
        // IMPORTANT!: Need to set MAC's clock to 8. September 3:00 AM to reproduce this bug
        VStack {
            Text(startDate1, style: .relative)
            Text(startDate2, style: .relative)
        }
    }
}

• How exactly does the .relative style work internally?
• Is it expected that different dates can collapse into the same result like this, or is there a better way to use .relative to get more precise results?

PS: I know about DateComponents and DateFormatter for exact calculations, but I’d like to understand this approach since it auto-updates natively with no timers or publishers.