Maybe it has something to do with Time Zones?

>We have a weird situation here. We've been trying to resolve that issue since the last two hours. Our Web Service has a method that receives a date. So, based on that date, a query is done and it returns some data. However, some users had problems with a date while I was not having it. So, after investigating, we found that the date received at the Web Service level is the date minus one day. But, that is only afffecting some users only. For me, when I pass a date, the proper query is being done on that specific day. But, for some other users, the date is converted to minus one day and they obtain some different data.
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>When we discovered that, I was not surprised as someone mentioned today that they got that same reaction to our Web Service. So, we have found a problem but have no idea where to look for. Basically, the date is converted either during the transport, at the Web Service level or at the code level. If anyone has had a reaction like that so far, I'd be interested to know more about it.