This information is extracted from Padm Puran Paatal Khanad, and has been edited for convenience.
Ram was 15 years old when he was married to Sita.
Sita was 6 years old then. .................................. They lived for 12 years in Ayodhya.
Ram was 27 years old when He was sent to forest
Lived 12 years in Chitrakoot
Lived the 13th year in Panchvatee
Ravan abducted Sita on Maagh Krishn 8th, in Vrind Muhoort
In the 10th month, Margseersh Shukla 9th, Sampaati informed Vanar that Sita was at Ravan's place
(This date is when month used to start from Shukla Paksh, but now when the month starts from Krishn Paksh, it can be taken as Kartik Shukla 9th.)
On Ekadashe (11th) Hanuman took the leap over the sea from Mahendra Parvat
On the same night he entered Lanka, but saw Sita in the last part of the night
He sat on Shinshapa tree on Dwadashee (12th) the whole day
On Dwadashee (12th) night he told the story of Ram to Sita
On Trayodashee (13th) he fought with Akshaya Kumar
On Chaturdashee (14th) he was tied by Meghnad
He came back to Vanar on Poornimaa (15th) .......... He spent 5 days in searching Sita
He spent, from Margsheersh Krishn 1st to 6th - 5 days on the way to Ram
On the 6th day they destroyed Madhu Van
On the 7th day, Margsheersh Krishn 7th, they came to Ram
They started for Lanka on 8th day in Uttarphaalgunee Nakshatra, Vijaya Muhoort in the afternoon
They took 7 days to reach the sea coast - reached there on Margshersh Amavasya
They stayed for 3 days on the coast - from Paush Shukla 1st to 3rd
Vibhishan came to them on Paush Shukla 4th
They had a consultation about crossing the sea on Paush Shukla 5th
Ram kept fast for 4 days - Paush Shukla 6th, 7th, 8th, and 9th
Sea came to Ram on Paush Shukla 10th and building the bridge also started the same day
[It is said that the Vanar built first 20 Yojan on the first day, 40 Yojan on the 2nd day, and 40 Yojan on the 3rd day.]
It ended on Paush Shukla 13th .... It took 3 days to finish the bridge
Ram came to Lanka on Paush Shukla 14th and made arrangement of stay for His army on Suvail Parvat ..... It took 3 days for Raam's army to cross the sea - from poornima to Dwiteyaa (Paush Krishn 2nd)
After crossing the sea Ram's army surrounded Lanka and stayed there for 8 days - from 3rd to 10th
Shuk and Saaran entered Raam'a army on Paush Krishn Ekaadashee (11th)
Shardool counted Vanar army on 12th
For the next 3 days - Paush Krishn Trayodashe (13th) to Amavasyaa - Ravan encouraged his army to fight
Angad went to Ravan on Magh Shukla Pratipadaa (1st) and Ravan showed Ram's severed head to Sita
THE RAM-RAVAN BATTLE
The Battle continued for 7 days - Maagh Shukla Doyaj to Ashtamee (2nd to 8th)
On Maagh Shukla Navamee (9th) Indrajit tied Ram and Lakshman with Naag Paash
On next day, Maagh Shukla Dashamee (10th) Vaayu Dev told Garud's Mantra Jaap in Ram's ears
Garud Jee came on Ekaadashee (11th)
On Maagh Shukla 12th Ram killed Dhoomraaksh
On Maagh Shukla 13th Ram killed Kampan Raakshas
During next 3 days, Maagh Shukla 14th to Maagh Krishn 1st, Neel killed Prahast
During next 3 days, Maagh Krishn 2nd to 4th Ram pushed Ravan back
Ravan woke up Kumbhkarn in 4 days - Maagh Krishn 5th to 8th
Ram could kill Kumbhkarn in 6 days - Maagh Krishn 9th to 14th
NO FIGHT ON MAAGH AMAAVASYAA - because of Kumbhkarn's killing
Fight started on Phaalgun Shukla 1st and in 4 days, 1st to 4th, 5 Rakshas, Vistantu etc were killed -
From 5th to 7th, Atikaya was killed
From 8th to 12th - Nikumbh and Kumbh (Kumbhkarn's sons) were killed
From 13th to Poornimaa - Makaraksh was killed
On Phaalgun Krishn 2nd, Meghnath won Lakshman
From 3rd to 7th .... The fight discontinued for 5 days because of Lakshman
From 8th to 13th - for 5 days the fight continued and Lakshman killed Meghnath
On Phalgun Krishn 14th Ravan took Deeksha for Yagya, so fight was discontinued for 1 day (14th)
On Chaitra Shukla 1st he again appeared in battlefield
The fight continued for 5 days - Chaitra Shukla 1st to 5th
In the next 3 days - from Chaitra Shukla 6th to 8th, Mahaparshwa etc Rakshas were killed
On Chaitra Shukla 9th Lakshman got struck with Meghnath's Shakti,
so Ram backed off Ravan from battle field - Hanuman brings Drone Parvat to treat Lakshman
On 10th Ram fought very severely
On Chaitra Shukla 11th Indra sends Matali with his chariot
It took 18 days to kill Ravan - from Chaitra Shukla 12th to Chaitra Krishn 14th
AFTER THE WAR
Thus there were 87 days of fighting , counting from Magh Shukla 2nd to Chaitra Krishn 14th
The fight was discontinued only for 15 days, it continued for 72 days
Ravan's last rites were performed on Chaitra Amavasyaa
Ram stayed in the battle field till Vaishakh Shukla 1st.
On Vaishaakh Shukla 2nd - Vibhishan was crowned the King of Lanka
On Vaishaakh Shukla 3rd - Sita was tested by Fire
On Vaishaakh Shukla 4th - Ram started for Ayodhya
On Vaishaakh Shukla 5th - Ram came to Bharadwaaj Muni's Aashram
On the day of 6th - the completion of His Vanvas - He came to Ayodhya - Nandi Gram
On Vaishaakh Shukla 7th Ram was crowned the King of Ayodhya
Ram was 42 years old and Sita was 33 years old at the time of the coronation as the King of Ayodhya.
Then Ram ruled for 11,000 years.