WHTZ

In addition to a standard analog transmission, WHTZ broadcasts in the HD Radio format, and streams online via iHeartRadio. From 2001 to June 18, 2020, the station was additionally simulcast on SiriusXM satellite radio channel 12; the station remained available on its streaming service until 2022.^[4][5]

Annual events[edit]

The station annually holds popular concerts featuring the world's top-name acts: "Z100's Jingle Ball" at Madison Square Garden in Midtown Manhattan during the winter holiday season, and Z100's Zootopia in late Spring (which was last held in 2009).


The 2011 Jingle Ball was considered the biggest Jingle Ball Z100 has ever had in their existence. It drew in the biggest stars in the world including Lady Gaga, Katy Perry, Justin Bieber, David Guetta, Pitbull, and LMFAO.


From 1983 to 1991 and from 1997 to 2004, Z100 aired the "24 Hours Of Christmas" from Christmas Eve to Christmas Day. Sometimes it began at noon, and other years it would be as late as 2 pm. It was one of the first major-market Top 40 stations to play wall-to-wall Christmas music at the time. The music consisted of Christmas songs by the station's core artists mixed with well-known Christmas music by oldies artists and some traditional easy listening type artists. The station played about 125 songs in total, which were repeated over this 24-hour period. When Scott Shannon arrived at WPLJ, he began the same tradition there in 1991. Z100 discontinued the tradition in 1992 and during the "alternative years". By 1997, more core artists began creating Christmas music. As a result, Z100 reinstated the 24 hours of Christmas that year. It continued until 2004, when it was discontinued due to the desire to counter-program other co-owned stations as well as competitors.


From 1997 to 2015, the station also aired a pre-recorded countdown show of the top 100 songs for the year, based on the total number of song spins, listener requests, and weekly playlist success (peak position, weeks on). The show was then repeated an average of once a day over the following week, with a final broadcast airing in January. Between 1997 and 2004, the countdown began at noon on Christmas Day after the "24 Hours Of Christmas"; the start date moved to Christmas Eve in 2005, which was the last year where Elvis Duran and Paul "Cubby" Bryant hosted the show. In June 2006, Cubby left Z100 to co-host the nationally syndicated "Wake Up With Whoopi" Goldberg program, which was heard on WKTU until Goldberg left that station. Songs that were released in the final quarter of the year could have been problematic; if a song is very popular during the last three months of the year and is in high rotation, it would often peak higher than a song that had been in medium rotation for a number of months. However, if a popular song is only in low to medium rotation during the later part of the year, it would often chart very low or not at all on the year-end countdown, only to appear very high on the countdown of the following year.