Look for primary records first
Ask family members and check a birth certificate, hospital record, baby book, or household registration where available.
Keep the source wording. A memory such as “around dawn” is useful as a range, not as an exact clock time.
Keep multiple possibilities
If your evidence supports more than one time period, calculate plausible alternatives rather than pretending there is one confirmed answer.
Compare broad, observable themes only; do not force a fit to choose a time.
Document confidence
Keep a note of source, stated time or range, birthplace, and any local-time uncertainty.
When no reliable time exists, use a result as limited reflection material rather than a definitive profile.
Where people commonly find a birth time
Search first for a birth certificate, hospital record, baby book, family archive, or government registration. In some families, a relative may remember a meal, sunrise, or shift change; record that wording before converting it to a range.
This is more reliable than using personality descriptions to reverse-engineer a time. The original source is part of the chart data.
How to work with an approximate time
If you can narrow the time only to a two- or four-hour window, make that limitation part of the reading. Compare possible charts for broad structural differences and wait for better evidence before making a firm claim.
An honest “birth time unknown” approach produces less false certainty and gives you a clear next step if new family records appear.