The phrase "when tomorrow starts without me" is often associated with a poem or song lyric reflecting on loss, the passage of time, or what happens after someone is gone. If you're asking about the literal meaning:
- "Tomorrow" starts at midnight, the very beginning of the next day.
- The phrase "without me" implies the speaker will not be present when that new day begins.
If you were referring to a specific poem, song, or meaning behind this phrase, please let me know! Otherwise, tomorrow begins exactly at 12:00 AM, regardless of individual presence.