What time does the IRS update their system?
The WMR and Transcripts can update anytime throughout the day. However, mass updates occur overnight between midnight and 3 am.
What day does the IRS update refund status?
WMR on IRS.gov and the IRS2Go app will be updated with projected deposit dates for most early EITC/ACTC refund filers by February 22. So EITC/ACTC filers will not see an update to their refund status for several days after Feb. 15.