Five former Fox channels that were acquired as part of a larger asset purchase by the Walt Disney Co., earlier this year could go dark tonight to Dish Network and Sling TV subscribers if a carriage deal isn’t reached, the networks said Tuesday.

The five channels were part of the larger $71.3 billion purchase of certain 21st Century Fox assets that Disney purchased in March. While no actual expiration date for carriage has been given, Disney said its agreement with Dish is set to expire at 9 p.m. Pacific Time Aug. 27 (tonight).

FX warned Dish customers of a potential blackout in July, but apparently gave the satellite giant an extension to keep the channels on the air while negotiations continued. Those negotiations seem to have hit a wall.

“Our contract with Dish for the FX and National Geographic networks is due to expire soon, so we have a responsibility to make our viewers aware of the potential loss of our programming,” Disney said in a statement. “However, we remain fully committed to reaching a deal and are hopeful we can do so.”

In a statement, Dish said that its "goal is to keep these channels available to our customers. Disney, the new owner of these channels, decided to involve customers in the contract negotiation process at a point when there is still time for the two parties to reach a mutually beneficial deal." 

This is the second blackout for Dish customers in the past two months. In July, 15 Fox regional sports networks -- now owned by Sinclair Broadcast Group --and the YES Network went dark to Dish customers. Two weeks later Dish Network founder and chairman Charlie Ergen warned that he may never carry the channels. 

The Walt Disney Co. and Verizon said they have reached a new distribution agreement that will stave off a potential blackout of networks including ESPN on Fios systems.

“Verizon and The Walt Disney Company have reached a broad-based distribution agreement. Details will be released in the coming days,” the companies said in a statement released Sunday morning.

The agreement would presumably include retransmission consent for ABC-owned stations in New York and Philadelphia. It would also cover Disney-owned cable networks such as Freeform and Disney Channel.

The agreement would mean Fios subscribers will get to see college bowl games and an NFL wild-card game on ESPN, in addition to news and weather on the ABC stations.

Many distribution agreements expire at the end of the year. Tribune, Nexstar and Tegna stations in some markets have agreements coming up with carriers including Charter (which might lose Tribune stations on Jan. 1), Cox and Mediacom.