BITFINEX:LTCUSD   Litecoin / U.S. Dollar
What Halving means?
Halving is a term common among cryptocurrency miners – the process sees the reduction of mining rewards of cryptocurrencies slashed by 50%.
The halving is the event, the moment when the mining reward is divided by 2, is commonly called "halving". Other denominations are used: "reward drop", "reward halving", or simply "the halving" or "the Halvening" which is a popular meme among bitcoiners.

Litecoin Mining Reward
Litecoin which runs on the same base code as Bitcoin halves its block mining reward every 840000 blocks or roughly every four years.
The next halving of the Litecoin network is expected to take place on August 09, 2019 (ETA). We are going to see the second halving that will bring the coin reward down to 12.5 coins from the current reward of 25 coins.
Miners are currently awarded with 25 new litecoins per block, an amount which gets halved roughly every 4 years (every 840,000 blocks). The Litecoin network is therefore scheduled to produce 84 million litecoins, which is 4 times as many currency units as Bitcoin .

Below are the statistics miners need to keep in mind before the next halving (18th December 2018)

Total Litecoins in circulation: 59,633,375
Total Litecoins to ever be produced: 84,000,000
Percentage of total Litecoins mined: 70.99%
Total Litecoins left to mine: 24,366,625
Total Litecoins left to mine until next blockhalf: 3,366,625
Litecoin price (USD): $28.94
Market capitalization (USD): $1,725,783,909.16
Litecoins generated per day: 14,400
Reward-Drop ETA date: 09 Aug 2019 01:52:31

If you want to keep track of when exactly the Litecoin block reward halving will occur and its economic effects you can follow this idea that it will be updated regularly.

Comment: Chart 1W LTCUSD Bitfinex
Halving 26th August 2015
Comment: Chart 1W LTCUSD Bitfinex
Next Halving 9th August (ETA)
Comment: Chart 1D LTCUSD Bitfinex
This snapshot shows the current price dynamic.
Reward-Drop ETA date: 05 Aug 2019 10:25:39