Step 1: Please select a point in the map by click the mouse. the longitude and latitude you just selected will be shown under the map. You can modify the coordinate by typing later.

Step 2: Type in a time period. The format is: YYYY.MM.DD.hh.mm e.g. 1999.11.02.13.20 means: Year(1999),Month(11),Day(02),hour(13),minute(20)

Step 3: Click the "submit" button