Time Difference Calculator
Duration between two clock times (supports overnight).
How it works
End − start; if end ≤ start, add 24 h (overnight)
Use 24-hour input: hour 0–23, minute 0–59.
Worked example
09:15 → 17:45: 17:45 − 09:15 = 8 h 30 min.
Overnight: 23:30 → 01:15 counts into the next day, (24:00 − 23:30) + 1:15 = 1 h 45 min.
Notes and limitations
Use 24-hour input to avoid AM/PM confusion. For different time zones, convert to one zone first; daylight-saving switch days introduce a one-hour offset.