Aspects of the disclosure relate to mechanisms for sidelink radio frame timing synchronization in a sidelink network. In some examples, a sidelink device may detect a sidelink synchronization signal (S-SS) transmitted by another sidelink device over a sidelink carrier and determine the sidelink reception timing of the radio frame carrying the S-SS based on the S-SS. The sidelink device may then determine a timing advance value indicative of a propagation delay between the sidelink devices and calculate the sidelink transmission timing of a radio frame within which the sidelink device may transmit information based on the sidelink reception timing and the timing advance value.