Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE), such as a roadside unit (RSU), located in an area of limited or no global navigation satellite system (GNSS) coverage may circulate sidelink synchronization signal (SLSS) neighbor information, such as in the form of an SLSS neighbors list (SNL). The SLSS neighbor information may include one or more of an index number, an SLSS identifier (ID), a timing source in-coverage flag, an RSU ID, a hop ID, a geographic location, a transmission synchronization offset, a synchronization source, and/or a coordinated universal time (UTC) time.