Hello neatneet,
There are a few websites that offer the service you are referring to. Cointelegraph and CoinGecko both offer an ICO calendar on their website. CoinGecko's ICO calendar is more extensive and includes a wide variety of ICO's you can find their calendar
here. The calendar offered by Cointelegraph is shorter and still in Beta mode, you can see it
here. Finally there are also a few websites that specifically focus on the announcing of ongoing and upcoming ICOs. Here are a few examples:
TokenMarket CoinScheduleTrackIcoAlways pay attention when investing in ICO's and getting information from a single source is never recommended. Be sure to do careful research on the coin you want to invest in!
With kind regards,
The Anycoin Direct team