Per 
SCP-XXXX-1 and -2 in their current containment.
Item #: SCP-XXXX
Object Class: Safe
Special Containment Procedures: The Foundation has purchased all properties located around the original site of discovery of SCP-XXXX. At least one security guard posing as a storekeeper must be present in the shop building behind SCP-XXXX to act as the owner of the items. Interactions of civilians with SCP-XXXX must be monitored, with actions matching the list of events in Document SCP-XXXX-A be discouraged and the committing civilian be politely turned away from the item. Civilians who insists to interact with SCP-XXXX in a manner which might damage the items and/or is noted in Document SCP-XXXX-A are to be taken into custody, interrogated, and released following appropriate amnestics treatment.
Description: SCP-XXXX is a temporal anomaly related to a collection of two ornamental chairs, located in the █████ neighborhood of the city of Prague, Czech Republic. The two items, designated SCP-XXXX-1 and SCP-XXXX-2, had a stylized design of a gold half-sun and a silver crescent moon, respectively, on their top rails. Testing has revealed that the frame of both objects are made of regular high-carbon iron and metal paint. The cushions are made from regular synthetic sponge and leather.
Whenever any of the objects are interacted with by a living human in a specific manner beforehand (see Document-XXXX-A for a list of known interactions), SCP-XXXX selectively reverses temporal passage for the subject, affecting causality. A person who sat on SCP-XXXX-1, who then followed by sitting on SCP-XXXX-2, will report that they sat on SCP-XXXX-2 first before SCP-XXXX-1. Likewise, if the person chose to sat on SCP-XXXX-2 first before then sitting on SCP-XXXX-1, they will claim that they experienced sitting on the latter first before the former.
SCP-XXXX does not affect the actual passage of time for subjects. It is hypothesized that SCP-XXXX only alters perceived psychological passage of time without actually modifying any real physical aspects. (See Test Log).
Test Logs:
The prerequisite conditions which triggers the main effects of SCP-XXXX has been sufficiently tested and documented beforehand in the form of Document SCP-XXXX-A, and is considered to be well understood. All tests performed below was done after such conditions was fulfilled.
Test no.: 001
Test subject(s): D-6508
Researcher(s): Junior Researcher Novak
Description: This serves as a baseline test for SCP-XXXX main effect. D-class personnel was instructed to approach SCP-XXXX-1 and SCP-XXXX-2 in a successive manner, with a cell sample collection performed between each.
Video log of results:D-6508 approaches SCP-XXXX-1 and sat on it for five seconds, followed by getting up.
Novak: "D-6508, please move forward and put your index finger on the sample collection terminal."
D-6508: "Again? That thing hurts, you know. How many pricks on the finger am I supposed to give you guys today?"
D-6508 approached the terminal and allowed sample collection, visibly flinching at the point of penetration. Junior Researcher Novak mutes the intercom.
Novak: "For the record, the D-class personnel has not been subjected to any other forms of bodily sample collection today that he's aware of."
Junior Researcher Novak unmutes the intercom.
Novak: "D-6508, now please walk up to SCP-XXXX-2 and sit on it until next instructions."
D-6508: "Which one was that one? The one on the left or on the right? I always get the instructions mixed up. You lab rats with your complicated codewords."
Novak: "It is the one on the right, with the crescent moon."
D-6508 approaches SCP-XXXX-2 and sat on it for five seconds, followed by getting up.
Novak: "Now move forward and put your index finger on the sample collection terminal."
D-6508: "Oh, so that's what that thingamajig is there for, eh? It's been a while since the last time I-"
D-6508 approached the terminal and allowed sample collection, noticeably yelling when his digits were pricked with the automated apparatus.
D-6508: <expletives redacted>
Novak: "D-6508, can you note how many times you have had your fingers pricked for cell sample collection in this test? Just for the record."
D-6508: "Are you somewhat short of a marble? That's two ███████ new holes you gave my fingers! First after sitting on the moon chair, and second when I got up from the ███████ sun chair! Is it always this painful?"
Novak: "This concludes our baseline testing."
Later analysis demonstrated that, despite D-6508's claim, cell sample taken after sitting on SCP-XXXX-1 is older than the one taken after SCP-XXXX-2, proving that the physical progression of time has not been altered.
