The first meeting will be held at Amravati at 12.30 pm and the second joint meeting will be held at 3 pm at Nagpur on Friday.
The parties have also decided on a 50-50 arrangement for the assembly polls
The two leaders are slated to address a joint press conference later Monday night where a formal announcement on continuation of the alliance is expected, a senior BJP leader said.
According to reports, the basic structure of the alliance has been worked out but the final numbers could see last-minute adjustments
Thackeray said, 'The issues of alliances, elections will be there. But Pakistan must not be allowed to go scot- free. It should be taught a befitting lesson.'
Fadnavis, who was on Vidarbha tour, cancelled some of his programmes scheduled for Thursday evening and rushed back to Mumbai to meet Thackeray after the Sena chief indicated that he would like to meet, sources said.
The telephonic conservation between Fadnavis and Thackeray took place after a meeting Monday in Mantralaya between striking BEST union functionaries and state chief secretary D K Jain failed to break the deadlock.
The Sena controls the BMC apart from being a partner in the BJP-led Maharashtra government.
He also termed the Pradhan Mantri Fasal Bima Yojana (crop insurance scheme) as "Fasavnuk Yojana" (Fraud Scheme).
Taking a dig at Prime Minister Narendra Modi's frequent foreign tours, he said mere speeches and announcements will not help the public, and demanded that the BJP-led government solve farmers' problems before looking at alliance talks for the forthcoming elections.
During his visit to Beed district in the region, Thackeray will hand over 100 cattle fodder-laden trucks and other essential supplies to farmers, a Sena leader said.
Upping the ante on the Ayodha issue, he said a discussion on Ram temple in Parliament will reveal the stand of NDA partners and also opposition parties.
The Sena leader, whose party is a constituent of the BJP-led governments at the Centre and state, was addressing a public rally in Solapur district.
The party said although the decision to provide relief to onion farmers was good, the government needed to ensure that its implementation was done in a speedy manner.
After the December 11 rout in the Hindi heartland, the BJP is on the back foot. The BJP-Shiv Sena are likely to form an alliance for 2019 polls, but not before Uddhav Thackeray shows who has the upper hand
Thackeray in a statement said, "I congratulate the courage of the voters who did not think about the useless question of who would be the choice (to the ruling parties in five states)."
Patel, who had a run-in with the Centre over RBI's autonomy, resigned from his post earlier in the day with immediate effect.
The Sena chief said that if the temple is not made perhaps this government will also not last but the temple will definitely be made
The Shiv Sena has recently been vocal in slamming the BJP over bringing a law to build the Ram Mandir
Thackeray said that during his visit to Ayodhya on November 25, he would "seek an answer" as to how many more elections will people be fooled with the slogan.
Further attacking the Bharatiya Janata Party (BJP), he said the bricks collected for the construction of a Ram temple in Ayodhya, Uttar Pradesh were in reality not for the temple but steps that took it to power.
Patil's statement is seen as the latest overture by his party to placate the Sena, which had announced to contest all future polls on its own strength.
At a rally here on Tuesday, Thackeray wondered if Chief Minister Devendra Fadnavis would declare drought only after consulting the "panchang" (astrological daily calendar).
Addressing a meeting of block workers of his party here in the Marathwada region, Thackeray said he would visit the Uttar Pradesh town on November 25 and question Prime Minister Narendra Modi over the temple issue.
It costs Uddhav nothing to raise the rhetoric on the Ram Mandir. But for the Modi government, the stakes are very high. People are already beginning to question why, after such a huge majority, the government could not lay a single stone for the temple in Ayodhya.