Air carrier flight crew reported a publication date discrepancy on an approach chart.

Attributes
ACN	1765799
Time
Date	202010
Local Time Of Day	0001-0600
Place
Locale Reference	RKSI.Airport
State Reference	FO
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy

Narrative:

In jeppesen pro X; the jeppesen approach chart for the ILS runway 33R is dated oct xx. The changeover date for the charts was on oct X; since I flew on oct X+1 and had to designate which set of jeppesen I wanted to use for that flight. On our flight on oct xy the only ILS for runway 33R is dated xx oct 20. The date appears wrong since the other two approach charts for that runway are effective at xa:00Z on oct X. We were cleared to the new points on the xx oct 20 dated ILS. My guess is an error was made by jeppesen on the publication of the chart.

Original NASA ASRS Text

Title: Air Carrier Flight Crew reported a publication date discrepancy on an approach chart.

Narrative: In Jeppesen Pro X; the Jeppesen approach chart for the ILS RWY 33R is dated OCT XX. The changeover date for the charts was on OCT X; since I flew on OCT X+1 and had to designate which set of Jeppesen I wanted to use for that flight. On our flight on OCT XY the only ILS for RWY 33R is dated XX OCT 20. The date appears wrong since the other two approach charts for that runway are effective at XA:00Z on OCT X. We were cleared to the new points on the XX OCT 20 dated ILS. My guess is an error was made by Jeppesen on the publication of the chart.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.