LEO:

minute's silence (in commemoration of so./sth.) - die Gedenkminute

minute's silence (in commemoration of so./sth.) - die Schweigeminute

Siehe Wörterbuch: minute silence

Siehe auch: eine Gedenkminute abhalten - to hold a minute...

Siehe auch: Eine Schweigeminute bitte

Siehe auch: one-minute/two-minute etc. silence - Schweige...

Siehe auch: Ich bitte um eine Schweigeminute für ...

A moment of silence (sometimes referred to as a minute's silence or a one-minute silence) is a period of silent contemplation, prayer, reflection, or meditation. Similar to flying a flag at half-mast, a moment of silence is often a gesture of respect, particularly in mourning for those who have died recently or as part of a tragic historical event.

One minute is a common length of time for the commemoration, though organizers may choose other periods of time, normally connected in some way with the event being commemorated (there might be a minute given for every death commemorated, for example). During the moment of silence, participants may typically bow their heads, remove hats, and refrain from speaking or moving for the duration. Most recently, there was a long eight minute and forty-six second moment of silence after the death of George Floyd.

https://en.wikipedia.org/wiki/Moment_of_silence

M-W:

moment of silence - (noun phrase) a short period of silent thought or prayer

The crowd observed a moment of silence for those who died in the tragedy.

https://www.merriam-webster.com/dictionary/mo...

Every year on September 11, we remember those who have fallen as a result of the horrific terrorist attacks against the World Trade Center and the Pentagon.

A national moment of silence is observed every year to correspond with the terrorist attacks at 8:46 a.m. EST, which is the time American Airlines Flight 11 hit the north tower of the World Trade Center.

https://www.msn.com/en-us/news/us/patriot-day...

A "Moment of Silence" is a brief period of reflection or meditation at the beginning of each school day. Since the mid-1980s, the movement has gained adherents in the U.S. and beyond as many schools, public and private, have begun to start their days with a moment of silence and reflection.

"Moment of Silence" is currently mandated for public schools in 12 states and encouraged (but not required) in another 25.

https://www.chabad.org/library/article_cdo/ai...

House observes moment of silence for late Rep. John Lewis

Lewis, a civil rights icon, died after a battle with pancreatic cancer ...

The House of Representatives held a moment of silence Monday in honor of the late congressman and civil rights leader John Lewis, who died on Friday. ...

The House chamber spontaneously broke into applause after the end of the moment of silence, while Pelosi was holding back tears. House Clerk Susan Cole was also visibly emotional ...

https://www.foxnews.com/politics/house-will-o...

Good idea to add some entries with verbs -- I wouldn't have had the foggiest idea about 'einlegen' and 'abhalten,' so thank you for calling those to our attention.

If it's not too much, I would be inclined to go even further and add a similar set of entries (with Gedenk- and Schweige-) with each of the following:

a moment of silence

a minute of silence

a one-minute silence

Of those, I would say a moment of silence is probably the most common, at least in AE in my experience, and a minute of silence is probably more common than the possessive 'minute's.'

Perhaps others will comment.

In dem verlinkten Faden geht es auch, soweit ich beim Querlesen verstehe, um den den Gegensatz 'a mintue of silence' (üblich) vs. 'a minute of grief' (unüblich). Und damit erklärt sich sammy Uk ausdrücklich einverstanden, glaube ich.

'a minute's silence' is also my BE default. I wouldn't naturally associate 'a moment of silence' with a formal, collective minute (or two) of commemoration/remembering -- simply a period of peace and quiet. See these examples from the Guardian:

https://www.theguardian.com/women-in-leadersh...

We all know the importance of a little peace and quiet, but how often do we actually manage to escape the noise and get a moment of silence?

https://www.theguardian.com/football/2017/oct...

It takes something unusual to create a moment of silence at Red Star Belgrade’s boisterous Marakana. 

There are plenty of examples on the Guardian that use 'moment of silence' to mean a minute's silence, but these almost all come from reports about US and A&NZ events and I assume are based on US/A&NZ press reports. If you search for 'a minute's silence' the reports shift to UK commemorations.

The most solemn phase of the service follows with a lone bugler sounding the Last Post, followed by a minute’s silence, and the sounding of Reveille.

https://www.rsa.org.nz/anzac-day-today-what-i...

Silence for one or two minutes is included in Anzac Day Dawn Services and commemorative services as a sign of respect. It offers a time for reflection on the significance of the whole ceremony.

Two minutes (sic.) silence is normally observed for all military Anzac Day Dawn Services and one minute (sic.) silence for subsequent or other Anzac Day commemorative services. For Anzac Day commemorative services that are held on a day other than Anzac Day, one minute (sic.) silence is to be observed.

https://www.defence.gov.au/ceremonial/anzacda...

One minute's silence as a symbol of commemoration

At 11am on the 11th day of the 11th month, on Remembrance Day, we pause for 1 minute of silence. That minute is a special time to remember those Australians who died in wars, conflicts and peace operations.

https://anzacportal.dva.gov.au/commemoration/...