Zones, and the Eastern Time feeds in the Pacific, Mountain and Alaska Time Zones) serves as a timeshift channel, allowing viewers who may have missed a particular program at its original local airtime to watch it three hours after its initial airing or allowing them to watch a program up to four hours, depending on the applicable time zone, in advance of their local airtime on their corresponding primary coastal feed. (Most cable, satellite and IPTV providers as well as its Amazon Prime Video and Roku OTT channels only offer the East and West Coast feeds of the main HBO channel; some conventional television providers may include coastal feeds of HBO2 in certain areas, while wider availability of coastal feeds for the other five multiplex channels is limited to subscribers of DirecTV, YouTube TV and the Hulu live TV service.) HBO maintains a separate feed for the Hawaii–Aleutian Time Zone—the only American cable-originated television network to offer a timeshift feed for Hawaii viewers—operating a three-hour-delayed version of the primary channel's Pacific Time feed for subscribers of Oceanic Spectrum, which otherwise transmits Pacific Time feeds for the six other HBO multiplex channels. (The state's other major cable provider, Hawaiian Telcom, offers the Pacific Time Zone feed of all seven channels.) Current sister channels Cinemax Cinemax is an American pay television network owned by the Home Box Office, Inc. subsidiary of Warner Bros. Discovery. Originally developed as a companion service to HBO, the channel's programming consists of recent and some older theatrically released feature films, original action drama series, documentaries and special behind-the-scenes featurettes. While Cinemax and HBO operate as separate premium services, their respective channel tiers are very frequently sold as a combined package by many multichannel television providers; however, customers have the option of subscribing to HBO and Cinemax's corresponding channel packages individually. On August 1, 1980, HBO launched Cinemax, a companion movie-based premium channel created as a direct competitor to two existing movie-focused premium channels: The Movie Channel, then a smaller, standalone pay movie service owned by Warner-Amex Satellite Entertainment (then part-owned by Warner Bros. Discovery predecessor Warner Communications), and Home Theater Network (HTN), a now-defunct service owned by Group W Satellite Communications that focused on G- and PG-rated films. Cinemax succeeded in its early years partly because of its reliance on classic movie releases from the 1950s to the 1970s—with some more recent films mixed into its schedule—that