In September 2021 the plans for the Queen's death were leaked https://www.politico.eu/article/queen-elizabeth-death-plan-britain-operation-london-bridge/
Read some key quotes from the article.
"The U.K. government website — GOV.UK — will display a black banner at the top. All government departmental social media pages will also show a black banner and change their profile pictures to their departmental crest. Non-urgent content must not be published. Retweets are explicitly banned unless cleared by the central government head of communications.
The royal family will announce plans for the queen’s funeral, which is expected to be held 10 days following her death."
10 KNOWN upcoming days of "darkness"
"Internally, the day will be referred to as “D-Day.” Each following day leading up to the funeral will be referred to as “D+1,” “D+2” and so on."
Could this be what D5 refers to?
Other D5 meanings include: An avalanche, December 5th...
It does fit, outage narrative was recently established -> Queen death announcement -> traditional 10 days mourning -> literal darkness from energy crisis narrative + climate narrative... All according to plan.
But wait, no... Screw tradition, let's do 17 days mourning this time. These people shit themselves over any and every break in protocol, no matter how arbitrary, someone stood up after the Queen, someone walked too fast or slightly out of step, or didn't wave long enough, or wear the blue shoes on the 2nd Tuesday in spring at the thing. This departure from tradition is interesting.