On Sunday all London Underground lines shut down between midnight and 1am, except one.
I'm sure you can spot the odd line out.
Ah yes, the odd one out is that peculiar two-station beast, the Waterloo & City line.
It shuts down before 10pm on weekdays.
It shuts down before 7pm on Saturdays.
And it doesn't bother opening at all on Sundays.
It's a very-early-shutty-downy sort of line.
But (fanfare) all that's about to change.
A new tube map has been released - online if not yet in stations - available here.
It's being issued mainly because Edgware Road (Bakerloo) is closing until Christmas.
But check the daggered list down the edge and the big W&C news is announced.
That's quite an extension for the Waterloo and City line.
On weekdays that's another two and a half hours of shuttling back and forth.
And on Saturdays that's almost six extra hours - the entire evening.
No longer will you have to think "Oh, I wonder if the Waterloo & City has closed down yet?"
From 2 June it'll run as late into the evening as all the other lines, near enough.
Apart from on Sundays.
There'll still be no Sunday service whatsoever, just like there isn't at the moment.
But the rest of the week, woohoo, extended service.
Remember, always check out the new tube map carefully.
You never do know quite what you might discover.
Except there is one really stupid thing about the tube map announcement. "From 2 June operating hours from Mondays to Saturdays will be extended to 0030."
Except that 2 June is a Sunday.
So make that 3 June instead.