Just a heads-up that, starting with TWS 10.18, the following errors/warnings started to trigger when requesting historical data:
2174 : Warning: You submitted request with date-time attributes without explicit time zone. Please switch to use yyyymmdd-hh:mm:ss in UTC or use instrument time zone, like US/Eastern. Implied time zone functionality will be removed in the next API release
10314 : End Date/Time: The date, time, or time-zone entered is invalid. The correct format is yyyymmdd hh:mm:ss xxx where yyyymmdd and xxx are optional. E.g.: 20031126 15:59:00 US/Eastern Note that there is a space between the date and time, and between the time and time-zone. If no date is specified, current date is assumed. If no time-zone is specified, local time-zone is assumed(deprecated). You can also provide yyyymmddd-hh:mm:ss time is in UTC. Note that there is a dash between the date and time in UTC notation.
The API documentation seems to already reflect these changes.
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