When is it late

Few twist of events that unfurled past few days has made me think hard on when to call "its late" ? I concluded on "late" was losing something. I lost few due to slackness, I lost more due to short sightedness, I lost many many more due to the muted senses of the 6th sense. The hard fact is its highly impossible to catch a flight when I realise that I have bought tickets for the flight which departs yesterday.
Before the realisation can strike the flight by now has already reached the destination. It is on-time for the flight but definitely late for me :(
I have tried to make the post as less cryptic as possible. The subtle content in the backdrop here itself can be shaped up to suit any late events or circumstances.