ETA From Departure Calculator
Add a flight time in minutes to a departure time of day, wrapping past midnight.
Description
Add a flight time in minutes to a departure time of day, wrapping past midnight.
ETA From Departure Calculator provides a focused, reproducible calculation with explicit inputs and a deterministic result. Add a flight time in minutes to a departure time of day, wrapping past midnight.
Use to add an elapsed duration to a 24-hour time of day and wrap across midnight.
When to use ETA From Departure Calculator
Use to add an elapsed duration to a 24-hour time of day and wrap across midnight.1
How the calculation works
Add a flight time in minutes to a departure time of day, wrapping past midnight.2
ETA = departure time + rounded flight minutes, modulo 24 hours 1Inputs and interpretation
Keep every input on the same valuation, timing, unit, and assumption basis. Interpret the output at the precision supported by those inputs rather than treating extra decimal places as additional certainty.
Limitations and assumptions
The output contains no date or time zone and does not account for routing changes, winds, holds, or delays.
References
-
Pilot's Handbook of Aeronautical Knowledge — Federal Aviation Administration
-
Flight planning — Wikipedia contributors
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