I can help figure this out, but I need your current time context to compute accurately. Assuming you’re asking “how long until 4:00 PM today,” the duration depends on your present local time. If you share your current time or your time zone, I’ll compute the exact hours, minutes, and seconds remaining until 4:00 PM. If you’d rather, you can quickly check with any countdown or time-difference tool by entering:

• Target time: 4:00 PM
• Your current time: [your local time]
• Time zone: [your time zone]

Provide your current time or time zone and I’ll give you the precise countdown.