The following is a summary of general EDGAR hours of operation:
The EDGAR system hours of operation for submitting files are 6:00am to 10:00pm Eastern Time, weekdays, excluding Federal Holidays. EDGAR filings must occur by 5:30pm ET (when the SEC officially ends its business day) to receive the same-day filing date. Filings submitted between 5:30pm and 10pm will receive the next business day’s date.
Three types of filings are not subject to the 5:30 p.m. cutoff and will receive a filing date identical to the received date up to 10 p.m. These three exceptions are:
A list of common SEC filing deadlines is available at http://www.m2compliance.com/sec-filing-calendar.php