0 in front of someone or something:
1 in or into the future:
2 earlier than or before someone or something:
This was one Olympic site that had been completed ahead of schedule (= before the time that was arranged).
The agenda is circulated to householders one month ahead of the meeting.
For most of the year London is five hours ahead of New York (= when it is 10 o'clock in London, it is 5 o'clock in New York).
The hardest part of the competition still lies ahead of us.
He told his players that they needed to sort themselves out ahead of tomorrow's game against Chelsea.
