All the Web services (except for LasRuleServices) have locale_descriptor as input parameter.
This parameter allows you to specify:
This descriptor enables the server to parse the values it receives from clients and return localized values (such as item properties). The format for the returned values is in the same locale. If the returned value is a message, then the message is translated according to the language of the specified locale, if a translation is available.
The property values must use strings for the locale provided in the locale_descriptor input parameter. This applies to integer and double properties.
Timestamp input parameters (such as lastUpdateTime, start_time, and end_time) are locale independent. This means that they are bound to the server time zone and a specific formatting pattern as returned by the server: yyyy-mm-dd hh:mm:ss.fffffffff, where ffffffffff indicates nanoseconds.