User:Jc3s5h/sandbox/Module:Zodiac date/doc

Usage
This template calculates duration of the specified tropical sign for a specified year, or the current year by default. The time scale is UT1, which is similar to Greenwich Mean Time. The supported range is 2015 to 2050, including all the signs in 2050 except Capricorn (because it begins in December and no data is available for the end date of the sign in January 2051).

The template has two unnamed parameters, a sign number and the year (the year is optional). Values for the sign number parameter are as follows: