Actuals with effective date on the 1st between 00:00 AM and 00:59 AM appear in wrong Cashflow month

When there are Actuals with an effective date starting on the 1st of a month with a time between 00:00 AM and 00:59 AM, the actuals are appearing in the previous month's column on the Actuals curve within Cashflow which is wrong. If we set the time in the Effective Date from 01:00 AM onwards, it is appearing in the current month on the Actuals curve within Cashflow which is correct. Is this behaviour a timezone setting, daylight savings, user preference setting, calendar setting, server setting or the expected Unifier behaviour? 

I have tested this making sure my user preference has same time date format as to the way the effective date is entered / imported.