This is a very basic app, designed for use by USAF C-130 Aircraft Commanders. It alleviates some of the mental math required while executing missions.
Enter an alert time in ZULU and it will calculate various mission times such as TDD and FDP, show them all in local time, and display remaining or elapsed time relative to current time.
After an alert time is entered, an additional line (called Goal Time) is generated allowing the user to set a custom time such as a NLT takeoff time, a TOT, or latest land time.