The time period search consists of two fields, the "FROM" and the "TO" date:
Entering a Date
The possible ways to enter the date depend on the language version installed in the browser/operating system (sequence of day, month, year, separator etc.). For PCs set up in English (GB) this can mean that a date is entered in the following syntax:
1. Complete date |
dd.mm.yyyy |
2. Month/year |
mm.yyyy |
3. Year |
yyyy |
4. Century |
19.Jh., 19.c or 19.s (Jh=Jahrhundert (German)) (c = Century) (s = siècle (French)) |
Dates before Christ
It is possible to search for dates in the area BC. Enter a minus sign before the date, e.g. for the year 1000 BC "-1000".
Interpreting the Information
E.g. |
Date field1 |
Date field2 |
Interpretation |
1 |
10.5.1944 |
12.6.1945 |
>=10.5.1944 and <=12.6.1945 |
2 |
5.6.1972 |
|
=5.6.1972 |
3 |
1980 |
1990 |
>=1.1.1980 and <= 31.12.1990 |
4 |
1972 |
|
>=1.1.1972 and <=31.12.1972 |
5 |
>1980 |
|
>=1.1.1981 |
6 |
<1980 |
|
<=31.12.1979 |
7 |
9.1950 |
|
>=1.9.1950 and <=30.9.1950 |
8 |
19. c. |
|
>=1.1.1801 and <=31.12.1900 |