A service marking the 25th anniversary of the Hillsborough disaster will take place in April.
The event is being organised by the Hillsborough Family Support Group, whose leading members include Keighley businessman Trevor Hicks.
His teenage daughters, Sarah and Victoria, were among the 96 Liverpool FC fans who died in the tragedy.
The 96th victim was Tony Bland, of Keighley, who suffered injuries which left him in a persistent vegetative state.
He was was allowed to die at Airedale Hospital four years after the disaster at the age of 22 when law lords agreed that his life support machine could be switched off.
Attendance at the April 15 service, at Liverpool’s Anfield stadium at 2.45pm, will be free. Tickets, limited to four per application, are now available.
The support group said it expected there to be a large turnout at the event.
Chairman Margaret Aspinall said: “Every day we continue to remember those who lost their lives.
“During this 25th anniversary service we will turn on a light for each and every life that was extinguished prematurely and the eternal flame of the Hillsborough Memorial will continue to light our way through the darkest days.
“We expect the service to be busy, so we urge people to obtain their tickets as early as possible and only request the amount of tickets needed. We have also put in a closing date of Monday, March 31, so we can plan accordingly.
“For many, April 15 may be a working day and there will be those who are unable to attend. We invite you to join us in thought and spirit and keep us in your prayers at this difficult time.”
Tickets can be obtained by phoning 0151 907 9399 or from Liverpool Football Club Ticket Office, PO Box 204, Liverpool L69 3JF.
The 96 Liverpool fans died as a result of a crush during an FA Cup semi-final at the Sheffield stadium in 1989.
The 1990 Taylor Report concluded the main cause of the disaster was a failure of police control.
The Hillsborough Independent Panel report, published in September 2012, also cleared Liverpool supporters of wrongdoing and found that 116 police statements were “substantially altered” in an attempt to blame fans for the disaster.
Original inquest verdicts of accidental death were quashed.
A service is held annually at Anfield to remember those who lost their lives.
Fresh inquests into the deaths are set to begin, in Warrington, on March 31.