Check if specific date is at least tomorrow in Swift

Question

What is the best way to properly check if a date is at least tomorrow?

So far I was able to come up with this solution, but I'm not 100% sure it's correct:

let calendar = Calendar.current

func isAtLeastTomorrow(_ date: Date) -> Bool {
    let now = Date()
    let startOfToday = calendar.startOfDay(for: now)
    let startOfTomorrow = calendar.date(byAdding: .day, value: 1, to: startOfToday)!
    
    return startOfTomorrow.timeIntervalSince1970 - date.timeIntervalSince1970 <= 0
}


let someDate = Date(timeIntervalSinceNow: 60 * 60 * 16)
isAtLeastTomorrow(someDate)

Answer 1 · 2025-11-20 06:54:34Z

Mojtaba Hosseini

• Nov 20 at 6:54

You can simply check if the date is in the future and not today. No need for any manual calculations.

func isAtLeastTomorrow(_ date: Date) -> Bool {
    date > .now && !calendar.isDateInToday(date)
}

Collectives™ on Stack Overflow

Check if specific date is at least tomorrow in Swift

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Collectives™ on Stack Overflow

Check if specific date is at least tomorrow in Swift

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