Not sure if "Strategy Development" is the right forum for this.
For many Ag futures like ZS, ZW, the rollover dates in NT's Instrument Database is too early. For instance, ZS 05-19 has a rollover date of 02/19/2019, but the first notice date for ZS 05-19 is 04/30/2019 and wouldn't a better rollover date be a few days before 04/30/2019 rather than in February? From a liquidity / volume perspective, a better rollover date would have been 04/09/2019 (rather than 02/19/2019).
I can obviously change the rollover date in NT. But I was wondering what's the reason for so early rollover?
Even the NT events calendar : https://ninjatrader.com/blog/trade-desk-calendar/ shows that 04/25/2019 is the roll date for May Grains, but in the NT instrument database why does it show 02/19/2019?
Thanks
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