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A Gregorian birth date, a Chinese lunar birthday, one year's Gregorian equivalent and a family celebration date can be four different records. Give each a clear label rather than keeping one unexplained month and day. The aim is not to collect unnecessary personal information, but to preserve enough context for the reminders you actually use.
Keep the original wording first
Note whether the date came from a document, a family recollection or an old calendar entry. Preserve its calendar and year-number system before standardising it. For Taiwan ROC records, convert the year explicitly. If a birth year or leap-month condition is unknown, mark it for confirmation rather than filling in a guessed value that later looks authoritative.
Create only the fields you need
Useful fields include the original text, confirmed Gregorian date, lunar year and month and day with leap status, selected Gregorian search year, annual candidates, chosen celebration date and unresolved questions. Someone who observes only a fixed Gregorian birthday need not also maintain a lunar reminder. Keep the record aligned with the family's actual preference.
Verify a complete date in both directions
Use the date converter when a full Gregorian birth date is available. Save every component of its lunar equivalent, including the leap flag. A reverse conversion should return the original day and can expose transcription errors. It cannot prove an uncertain recollection correct. A zodiac animal or repeating year name is not enough to identify one unique historical birth year.
Build lunar reminders for the intended year
Use the lunar birthday finder with the original month, day and leap-month condition, then choose a target Gregorian year. Results may contain one candidate, two candidates or no exact match. Keep that result before choosing a celebration. Do not replace the original birthday just because the target year lacks a matching month or day.
Check how the reminder actually repeats
Repeating this year's Gregorian equivalent every year usually repeats that Gregorian month and day; it does not necessarily follow the Chinese lunar calendar. If the reminder application's lunar behaviour is unclear, calculate each year explicitly. Label an agreed weekend celebration as an activity date, not an exact lunar conversion. Completed age and zodiac lookup have their own conventions and should not be inferred from the number of celebration reminders.
Share less, but preserve the calculation context
An invitation generally needs the activity date, time and place, not a copy of a birth document. For your own calculation record, keep the input and selected rule alongside the answer. When a date is corrected, note which reminders need updating. The public tools do not require a visitor account or an uploaded birth certificate. For difficult cases, consult the leap-month explanation or missing-day guide before creating the next annual reminder.