TypeError: can't compare offset-naive and offset-aware datetimes

[zopyx]

According to

https://ploneappevent.readthedocs.org/en/latest/development.html#getting-and-setting-properties

the following error should not happen.
(Plone 5.0.2, plone.app.event 2.0.3)

bin/instance run scripts/new-site.py omicron
Traceback (most recent call last):
  File "/home/ajung/sandboxes/omicron_buildout/parts/instance/bin/interpreter", line 280, in <module>
    exec(_val)
  File "<string>", line 1, in <module>
  File "scripts/new-site.py", line 100, in <module>
    obj.reindexObject()
  File "/home/ajung/.buildout/eggs/Products.CMFCore-2.2.10-py2.7.egg/Products/CMFCore/CMFCatalogAware.py", line 88, in reindexObject
    catalog.reindexObject(self, idxs=idxs)
  File "/home/ajung/.buildout/eggs/Products.CMFCore-2.2.10-py2.7.egg/Products/CMFCore/CatalogTool.py", line 301, in reindexObject
    self.catalog_object(object, uid, idxs, update_metadata)
  File "/home/ajung/.buildout/eggs/Products.CMFPlone-5.0-py2.7.egg/Products/CMFPlone/CatalogTool.py", line 345, in catalog_object
    update_metadata, pghandler=pghandler)
  File "/home/ajung/.buildout/eggs/Products.ZCatalog-3.0.2-py2.7.egg/Products/ZCatalog/ZCatalog.py", line 476, in catalog_object
    update_metadata=update_metadata)
  File "/home/ajung/.buildout/eggs/Products.ZCatalog-3.0.2-py2.7.egg/Products/ZCatalog/Catalog.py", line 347, in catalogObject
    self.updateMetadata(object, uid, index)
  File "/home/ajung/.buildout/eggs/Products.ZCatalog-3.0.2-py2.7.egg/Products/ZCatalog/Catalog.py", line 311, in updateMetadata
    if data.get(index, 0) != newDataRecord:
TypeError: can't compare offset-naive and offset-aware datetimes
make: *** [new-site] Error 1

for i in range(10):

    id = 'event-{}'.format(i+1)
    start = datetime.now().replace(hour=9, minute=0, second=0)
    end = start + timedelta(days=2)
    end = end.replace(hour=17)

    path = '{}/de/kurse-termine/{}'.format(site_id, id) 
    obj = plone.api.content.create(type='Event', container=root['kurse-termine'], id=id)
    obj.setTitle(gen_sentence())
    obj.setDescription(gen_paragraphs(1))
    text = gen_sentences()
    obj.text = RichTextValue(text, 'text/html', 'text/html')
    obj.contact_name = u'Heinz Becker'
    obj.contact_email = u'[email protected]'
    obj.contact_phone = '+49 1234 1212121'
    obj.event_url = u'https://www.plone.org'
    plone.api.content.transition(obj, 'publish')
    event = IEventBasic(obj)
    event.start = start
    event.end = end
    event.timezone = 'CT'
    obj.reindexObject()

[zopyx]

Solved the problem by

    start = (datetime.now() + timedelta(days=random.randint(2, 365))).replace(hour=9, minute=0, second=0)
    start = start.replace(tzinfo=pytz.UTC)
    end = start + timedelta(days=2)
    end = end.replace(hour=17)