January 20th – exactly a ten days since David Bowie passed away – has been officially declared David Bowie Day in New York City. Acting Commissioner Luis Castro of the Mayor’s Office of Media, is scheduled to read the full proclamation after the curtain of the final performance of Lazarus. Lazarus was entirely conceived and co-produced by Bowie, and starred Dexter‘s Michael C. Hall.

Lazarus marked Bowie’s first time scoring a stage production, but was hugely successful with a sold-out run. Rolling Stone gave the production great reviews:

“At its core, Lazarus is a two-hour meditation on grief and lost hope, but it takes so many wild, fantastical, eye-popping turns that it never drags…Bowie’s myriad musical personas have all had a strong theatrical streak.”

The December 7 premiere of  Lazarus, which was performed at the New York Theatre Workshop was also the venue of Bowie’s last public appearance.

Aside from the declaration of David Bowie day, the late singer has been honoured with a small mountain of flowers outside his SoHo apartment, late night television odes, musical performances by his peers and fans, and a (symbolic, but not real) constellation since his death at the age of 69 last week.

The proclamation by New York City is poignant because Bowie had lived there for over twenty years, and “[couldn’t] imagine living anywhere else.” The symbolic proclamation pays tribute to the British artist as “a global icon who made New York his home.”

Grief at Bowie’s passing has manifested itself in a myriad of different ways; Kate Moss threw a Bowie-themed party, trawling old magazines for interviews with the legendary Starman or watching YouTube videos of vintage Bowie like this one.

On September 23, a David Bowie-centric exhibit called “David Bowie Is” will open at the Museum of Contemporary Art Chicago. Mayor Rahm Emanuel declared that day “David Bowie Day” in Chicago in 2014, Consequence of Sound reports. The exhibition will be complemented by a host of David Bowie-themed events.

But the urge to celebrate Bowie’s life isn’t restricted to the US. Fans in the UK are planning to honour the star with a mass sing-along at this year’s Glastonbury Festival. An unnamed individual launched the Twitter account @BowieGlasto2016 in a bid to get thousands of people singing the late singer’s hits at the Pyramid Stage during the Wednesday evening of Glastonbury.

According to NME Magazine, Bowie posthumously topped the US charts with “Blackstar” last week (January 15) and now the Official Chart Company has revealed that Bowie is currently over 28,000 chart sales ahead of his next nearest competitor, Adele. “Blackstar” also went to number one in most major music markets including Australia, Britain, France, Germany and Japan.