From India, Bangalore
Spreadsheet software typically has functions such as LOOKUP, HLOOKUP, and VLOOKUP, to find either a value in a row or column that matches the argument, or in the case of range lookup, to find an interval in a set of adjacent intervals (given by their limits, specified in a row or column) which contains the argument. The result is the corresponding value in a specified parallel row or column. (Source: wikipedia)
For further information you may like to refer to following link:
http://timeatlas.com <link updated to site home>
Thanks,
From India, Rajkot
Excel vlookup
From Israel, Holon