DateCalculator.org uses Google Analytics to monitor site usage in order to improve the quality of the pages. Google Analytics provides statistical data only for website mangement.
DateCalculator.org uses Google Adsense to display ads.
Google's use of advertising cookies enables it and its partners to serve ads to your users based on their visit to your sites and/or other sites on the Internet.
Users may opt out of personalized advertising by visiting Ads Settings and www.aboutads.info.