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Planning my 2nd 270/270 attempt around june I would like to know if anyone knows if there are some stations closed for engineering works on saturdays. So, which is the best day to do a full challenge? Friday or Saturday? I must buy the plane ticket so is better to plan it well and any help is welcome. Thanks to all!

There is nearly always some part of the network closed every weekend so you would be better off trying on Friday.

And if you're planning to try for the record, go on Fridays as Guinness dont accept attempts on weekends.