>>> tomorrow = maya.when('tomorrow') 
    <MayaDT epoch=1481919067.23> 
    >>> tomorrow.slang_date() 
    'tomorrow' 
    >>> tomorrow.slang_time() 
    '23 hours from now'

This is actually my biggest gripe with date+time libs. Imho API should always be explicit in what its default TZ is.

EDIT: still, appreciate what you are doing. Requests rule, and there are many other areas (including datetime) that need libs with better APIs. Thumbs up!