Time to test, attached a beta version of the pop-up for the April release.
I run the test-site http://wd34.weather-template.com/pwsWD/ with timezone/at/lon for Edinburgh city center and IMHO I think this pop-up has the correct rise set times compared to this site: https://www.timeanddate.com/moon/uk/edinburgh
Please test it at your site for errors in the calculations (AFTER you made a copy of the current moon-popup.php).
Thanks in advance, Wim
moon_popup.php.zip (5.89 KB)