Birth Time Entry 
Please select the hour of birth in the hour field, and enter the minute (between 00 and 59) in the minute field.

The time must be given in wrist watch time, as it would have been shown on a normal person's wrist watch at the place of the birth event. All necessary corrections for time zone or daylight saving time are applied by the computer automatically.

Unknown birth time
If you don't know the time of birth, you should find it out. In nearly all countries of the world the time of birth is officially registered at the registry office where births records are maintained. Please contact the birth registry office in charge for your birth town, and request a copy of the registry information, including birth time. You must mention birth time, because otherwise many birth certificates are issued without the time even when it is contained in the records.

Precise time entry
The minute field accepts also time entry with high precision, up to 1/100 of a second. If you want to enter 23m45sec, please enter 23:45 or 23.45 in the minute field. Fractions of seconds can be entered like 23:45.67. The minute field scrolls horizontally if your entry is longer than the visible space. Most chart output will not display fractional seconds but the fractions are used internally for computation.