Northamptonshire face a tough opener in next season's County Championship.
Newly promoted Northants will play reigning champions Durham in the opening fixture of the LV=County Championship.
Northants won promotion after finishing second in Division Two last year.
Meanwhile, Essex will face newly relegated Derbyshire at the County Ground in Division Two.
Essex will hope to build on last season where they narrowly missed out on promotion.
For a more in-depth look at both clubs fixtures, click the links below:
More top news
After the snowy conditions over the weekend, the Met Office has issued an ice warning for Monday's rush hour.
Hundreds of schools across the Anglia region have been forced to closed after the weekend's wintry weather.
European Champions Cup campaign all but over after third defeat in Pool 2