If it's 4 AM in Sydney, Australia, it would be around 12 PM the previous day in Utah (Mountain Standard Time) or around 1 PM the previous day during daylight saving time (Mountain Daylight Time).
Australia spans multiple time zones, and Utah is in the Mountain Time Zone in the United States. If it's 4 AM in Australia, we need to consider the specific location in Australia and the time difference.
For example, if it's 4 AM in Sydney, Australia (Australian Eastern Standard Time, AEST), there is a significant time difference. Sydney is typically 16 hours ahead of Mountain Standard Time (MST) and 15 hours ahead of Mountain Daylight Time (MDT) during daylight saving time.
So, if it's 4 AM in Sydney, Australia, it would be around 12 PM (noon) the previous day in Utah if considering MST, or around 1 PM the previous day if considering MDT during daylight saving time. It's important to check whether daylight saving time is in effect in both locations, as this can affect the time difference.