You wait all season for the chance to put one over South Yorkshire rivals, and then three come at once. Sheffield United and a packed Proact await on Saturday lunchtime, 1pm kick-off.
Perhaps the only thing more important than a touch of local one-upmanship is the three points on offer as the Spireites look to put further distance between themselves and the bottom four.
Mid-afternoon on Friday there were just a few dozen home tickets remaining. If any remain on matchday morning they will be on sale over the phone (01246 269300) or in person from 9am.
The away allocation has sold out, and Sheffield United supporters will strictly not be admitted in home areas. Supporters purchasing home tickets will have their details checked against the Sheffield United database.
The Club Superstore opens from the earlier time of 9am on Saturday and fans can buy replica shirts for £10 each, 50% off leisurewear and take advantage of a host of other offers, right up until kick-off.
The Spireites have no fresh injury concerns after the intense win at Barnsley last Saturday, but remain without a number of first team options for the visit of the Blades.
Liam O'Neil remains out with an ankle injury, while left-back Declan John has been recalled by Cardiff City after picking up a troublesome hamstring complaint. Elsewhere longer-term injuries keep out Dan Jones, Ian Evatt and Angel Martinez.
Jamal Campbell-Ryce misses through suspension but better news comes with the goalscoring return for Dion Donohue in the reserves this week, while defender Sam Hird is expected to be fine to start after Danny Wilson spoke of a groin worry last weekend.
Nigel Adkins looks to also have the same squad available from the previous match, though influential pair John Brayford and Kieran Wallace remain out injured and are unlikely to return before the end of the campaign.
The Spireites have recorded back-to-back wins to boost their survival hopes, with the six points pushing the club four clear of the dreaded bottom four.
With 50 points often considered the standard safety mark and Chesterfield already up to 49 it seems more than likely that a higher total will be needed to guarantee League One football next season - and with home matches against South Yorkshire rivals coming up on Saturday and Tuesday it gives the Spireites a huge opportunity to take giant strides forwards.
United have been consistent only in their recent inconsistency. Impressive wins such as the one over promotion-chasers Walsall have been sandwiched between defeats and draws.
With four defeats in their last five away games the Spireites will have heightened hopes of a repeat of last season's barnstorming 3-2 Proact win.
From the Dugout
He may be a former Blades captain, but now enjoying his time as first-team coach for the Spireites, Chris Morgan underlined the size of Saturday's lunchtime kick-off.
"It's huge," he said. "It's huge for confidence, it's huge for the supporters and when Sheffield United came here last year Michael Higdon was sent off and the side were on the wrong side of a defeat.
"Looking back to that, the Chesterfield supporters didn't half enjoy it. They'll be up for it on Saturday, the ones who travelled up the motorway to Barnsley were in full voice and last Saturday they'll be looking forward to the game.
"When the away end's full it creates an atmosphere, the United fans will come down from Sheffield and thinking they need a win.
"They have to come and get three points as they're chasing a play-off place. It's got the makings of a good game and there'll be no need for motivation."
With a large crowd and what's likely to be a vocal away support, Morgan says that the Blades will be heading across the county border with hopes of igniting a late play-off charge.
"We know it's going to be a tough game," he said. "We're under no illusions about that. They're nine points off the play-offs and they're be looking to get wins in their last five games.
"They'll be mindful of us as well, they'll look through our squad and realise that we've got good players as well. It's always the same with derby games, there's a full house, great atmosphere and it depends which side handles the situation best."
To keep up-to-date with every kick of what promises to be a terrific early afternoon at the Proact, keep all your browsers and smartphones tuned into the official Spireites media channels.
We'll have live ball-by-ball commentary on PlayerHD, minute-by-minute updates on Twitter and images and information on Facebook and Instagram.