In the US system, it is approximately 6 weeks between the presidential election and the actual handing over of power to the winner. It seems surprising that executive power is retained so long by a voted-out leader. (Surprising to a citizen of a Westminster parliamentary system, at any rate...)
Are there any other countries that have similarly long periods?
The Wikipedia article on "Lame duck (politics)" conflated the issue with several others, and this question focuses on inuguration, which to me is a somewhat different question. (It's not obvious to me that political appointments need to be made on the same day as the new leader is sworn in, especially since many will continue to be made in the months that follow anyway.)
The kind of comparable situations I'm looking for is where the elected leader holds considerable power (not just a figurehead), and the delay is routine (not, for instance, due to an occasional failure by parties to form a majority).