Section 42-1105.02 - Date of filing by electronic means; definitionsA. Any return, statement or other document that is electronically filed pursuant to an electronic filing program established by the department shall be deemed filed and received by the department on the date of the electronic postmark. If the taxpayer and the electronic return preparer or the electronic return transmitter are in different time zones, it is the taxpayer's time zone, as determined by the taxpayer's address, that controls the timeliness of the electronically filed return, statement or other document. When a return, statement or other document has been electronically received on the host system of more than one electronic return preparer or electronic return transmitter during its ultimate transmission to the department, the return, statement or other document shall be deemed filed and received by the department on the date of the earliest electronic postmark.B. Any return, statement or other document that is filed under subsection A of this section and that is not received by the department shall be deemed filed and received on the date of the electronic filing, as evidenced by the electronic postmark if the sender:1. Establishes the date of the electronic filing.2. Files a duplicate filing with the department within ten days after the department notifies the sender in writing of the nonreceipt of the filing.C. If the due date of any return, statement or other document filed under subsection A of this section falls on a Saturday, Sunday or legal holiday, the filing shall be considered timely if it is performed on the next business day.D. In this section, unless the context otherwise requires:1. "Electronic filing program" means any program established by the department that authorizes the electronic filing of a return, statement or other document.2. "Electronic postmark" means a record of the date and time in a particular time zone that the return, statement or other document is electronically received on the host system of the electronic return preparer or electronic return transmitter that participates in the transmission of the electronic return, statement or other document to the department.