Hi,
Here is blog post about how to get time zones information from SharePoint
SPRegionalSettings.GlobalTimeZones - How to build world clock / get time zones information in SharePointYou can use it to calculate timezone difference between India time and US time. Then compare your list items with calcuated time (= US time - India&US time difference).
But if your SharePoint site NOT only use by people from India, you'll need to figure out their client machine time zone.
hope it helps
James
- James Tsai | wwww.jamestsai.net | SharePoint Blog