convert australian western daylight time to gmt in swift

To convert Australian Western Daylight Time (AWDT) to Greenwich Mean Time (GMT) in Swift, you can use the Date and DateFormatter classes to handle date and time zone conversions.

Here's an example code snippet that shows how to convert a given date in AWDT to GMT:

main.swift
// Create a DateFormatter that uses the AWDT time zone
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
dateFormatter.timeZone = TimeZone(abbreviation: "AWDT")

// Get the date to convert as a string
let dateString = "2022-09-10 10:00:00"

// Convert the string to a Date object using the AWDT time zone
guard let date = dateFormatter.date(from: dateString) else {
    print("Error: Invalid date format")
    return
}

// Create a new DateFormatter that uses the GMT time zone
let gmtDateFormatter = DateFormatter()
gmtDateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
gmtDateFormatter.timeZone = TimeZone(abbreviation: "GMT")

// Convert the date to the GMT time zone and print the result
let gmtDate = gmtDateFormatter.string(from: date)
print(gmtDate)
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In this example, we first create a DateFormatter object that uses the AWDT time zone. We specify the date format we want to use, and set the time zone property to the appropriate abbreviation ("AWDT" in this case).

Then, we get the date to convert as a string ("2022-09-10 10:00:00" in this example), and convert it to a Date object using the AWDT time zone.

Next, we create a new DateFormatter object that uses the GMT time zone. Again, we specify the date format we want to use, and set the time zone property to the appropriate abbreviation ("GMT" in this case).

Finally, we convert the date to the GMT time zone using the new DateFormatter, and print the result ("2022-09-10 02:00:00" in this example).