Given #415:

• I've included the Diamond Jubilee holiday, as a 1-off (for-only-that-year) entry, since it apparently applies beyond the UK (The Bailiwick of Jersey is a crown dependency, not part of the UK (or, technically, Britain), but under the crown).
• I, too, wasn't sure of the best way to handle substitute holidays, so added them as fixed_date entries (with obvious names) per-year.

PH that is not every year cannot be expressed here. I don’t want to extend the holiday code and better solve #300 some day. https://github.com/KDE/kholidays supports this which is the current favorite (#300). You would have to drop this from this PR. You can consider submitting to https://github.com/KDE/kholidays to not lose this info if you care.

substitute holidays

Search for nextSaturday20Jun in https://github.com/opening-hours/opening_hours.js/blob/master/src/index.js

Doing it all on a phone is proving to be somewhat of a challenge.

Thanks for your effort!

Thanks for the prompt review.

I'll return to this & make refinements next week once all the festive distraction is over.

However, for now:

PH that is not every year cannot be expressed here.
…
You would have to drop this from this PR.

I wasn't aware of this. The documentation (/src/holidays/README.md) is misleading, and should be updated.

You are welcome.

I wasn't aware of this. The documentation (/src/holidays/README.md) is misleading, and should be updated.

I am not sure about that. You used 2020 as key:

PH: # http://www.gov.je/leisure/events/whatson/pages/bankholidaydates.aspx
 - {'name': '75th Anniversary of VE Day', '2020': [5, 8]}

The allowed keys are documented here: https://github.com/opening-hours/opening_hours.js/tree/master/src/holidays#holiday-definition-format-ph

What can be confusing is the difference between PH and SH. They have different formats. Year is only supported for SH.