Way/Area closure Period (from date_start until date_end) is – in general – not on OSM. Some exceptions: opening_hours = Mar 15-Jun 15 off "bird breeding season" Construction period is between two dates. Or: opening_hours = 2019 Feb 18-2019 Mar 29 closed "Reconstruction period Defensie Eiland" Or: access:conditional = no @ (2019 Feb 18-2019 Mar 29) For me it's hard to not forget to remove by the end of construction period. Therefore I Set: fixme = opening_hours to be deleted by 2019 Mar 21 Still, hard to not forget. Question: Can mkgmap implement a new function? [period-has-ended] Function: - Is there a date ("yyyy mmm dd") in opening_hours? Including "yyyy"? - If yes, find the last date. - If Today > Last_date Then [has-period-ended] = True Even better: Function has-period-ended (MyDate). Opening_hours (closure) will have ended (or not) after Map production date or start of my holiday: MyDate. I guess mkgmap Logging option (-Dlog.config=filename) can be used to generate a text file having all my Errors. I do hope { echotags "Error message... " } can be logged as well. Or I could Render outdated Warnings on the Map, differently from actual Warnings. And if this is an option, has mkgmap a preference for [opening_hours] or [access:conditional]? access:conditional is more straight forward, easier to interpret. But opening_hours has the option to add free text: "Reconstruction period Defensie Eiland", "ferry during working hours" (extra information and explanation). -- Sent from: http://gis.19327.n8.nabble.com/Mkgmap-Development-f5324443.html