The first sql/xml dumps run (1st of every month) is a full run, this means it contains all historical data and takes longer to dump. Currently we still have the wikidata dumps ongoing, and expect it to complete tomorrow. This gives us a margin of a few days in case there are errors causing us to delay or rerun some parts.

The second run starts on the 20th and is a partial run (current revision only) which is why it finishes well before the end of the month, giving us again a few days in case we need to troubleshoot or rerun some parts.

While the specific wiki, enwiki, does complete well before the 15th, splitting up the wikis so that some are dumped on a 1st and 15th schedule and some are dumped on a 1st and 20th schedule would add more complexity than we want to manage.

I hope this helps to answer your questions, and we would be happy to respond if you need further information.

Thank you

@Hokwelum Thank you very much for the prompt and detailed answer. I forwarded it to the original user on the wiki talk page.

In T315263#8159316, @Dzahn wrote:

@Hokwelum Thank you very much for the prompt and detailed answer. I forwarded it to the original user on the wiki talk page.

Is it ok to go ahead and close this task now, @Dzahn ?