Older discussions can be found on the Talk:Proposed_features/Key:fixme.
Revisit by a certain date
Martijn van Exel (talk) 17:39, 28 November 2016 (UTC): How about fixme:by=* for triggering mappers to revisit a certain feature by a date? Use case would be roads that get closed when they become impassable because of seasonal conditions (flooding, snow). The mapper would add access=no when the road closes for the winter and add fixme:by=2017-05-01 to have add a reminder to revisit the way by the beginning of May and 'reopen' it. There is already seasonal=* and [Conditional_restrictions] but neither accommodate the unpredictable nature of these closures. Another use case would be for highway=proposed and highway=construction if the mapper knows by what time a road is planned to start construction or is to be completed.
--Hedaja (talk) 10:57, 1 December 2016 (UTC) for temporary things I like the temporary tagging scheme better than a fix_me:by date (https://wiki.openstreetmap.org/wiki/Proposed_features/temporary_(conditional). A temporary tagging has been suggested before (this one is still quite new) but it never really gained attention. The advantage I see is that even if no one maintains it the old information is still available. For example if you have a temporary road closure (road works, seasonal) the renderer/router could decide himself if he wants to use the temporary tag. If you have a specific date that's the easiest, if you don't have one, you could still assume that a to you old small section closed for construction might be open again.
-- Nospam2005 (talk) 22:01, 5 December 2016 (UTC) why not extending the Key:opening_hours scheme with seasonal a bit like how variable_time is defined? Note: opening_hours can be user friendly: . For data depending on weather you should have a (open) source of the event and add a temporal closure on the map,  sounds a better concept.