How to use custom date for diary entry

I have a Tiddlywiki that I use as a diary. Recently, I found some old entries from 2015 that I placed in Evernote which I want to transfer into my Tiddlywiki diary. But the entries I’ve added naturally have today’s date and I want to replace the created dates with the original date from 2015. There are only about 30 posts, so I’m happy to manually change each post if necessary. How can I have a custom date for these old 2015 posts, but continue as normal for any new 2026 posts? Any suggestions please?

I’m using the latest version of Tiddlywiki.

Edit each old post and in the “add new field” input, enter created as the field name. Note that, while the “created” field is not normally shown in the tiddler editor, you are actually editing the tiddler’s existing “created” date rather than adding a new field.

Then, in the field value input, enter a value using the TWCore’s 17-digit datetime format, like this: YYYYMMDD120000000 where “YYYY” is the year, “MM” is the month, and “DD” is the day number.

Note the rest of the datetime is “120000000”, which represents midday “HHMMSSXXX” (where HH=hours, MM=minutes, SS=seconds, XXX=milliseconds). Since the TWCore datetime values are stored as UTC, using “120000000” ensures that your input won’t result in a 1-day shift due to any timezone offset between UTC and your actual timezone.

-e

Thank you for the prompt reply.

I am putting the word created for the field name in “Add a new field” and then 20150203120000000 as the field value then clicking Add, but nothing is happening. I saved the file and refreshed too, but still nothing.

The created field is never shown in the tiddler editor, but “adding” it should still change it’s value. After clicking “add”, if you save and exit the tiddler editor using the “done” (checkmark) button, and then check the tiddler’s info (usually in the “more” dropdown menu), the date you entered should be shown as the “created” value.

-e