The countdown is based on server time, which is currently:
Updated September 2015
Federal Communications Commission (FCC) rules require applicants to wait at least 28 days after the FCC Form 470 is posted to the USAC website before selecting a service provider, executing any contracts for contracted services, or signing and submitting an FCC Form 471. Your state or local procurement regulations may require a longer waiting period or impose additional requirements.
Some state or local procurement rules or regulations require applicants to issue a Request for Proposal (RFP) in addition to the FCC Form 470. Also, applicants may choose to issue an RFP even though one is not required by state or local procurement regulations. FCC rules require that, if applicants issue an RFP, it must be uploaded as part of the online FCC Form 470 filing process.