I just released version 1.7.0 of node-red-contrib-chronos. This release adds a new node called Time Change node. As the name suggests, it has capabilities to modify messages and context stores similar to the Node-RED change node. But all set and change operations are based on time values in this node which can be provided as numerical or string-based timestamps.
This means you can set message properties, flow variables or global variables to the current time or specific date/times (with similar possibilities as you know already from the other Chronos nodes). You can also change such input fields in various ways like changing parts of the date and time, adding or subtracting time, setting timestamps to the start or end of a unit of time or convert timestamps to string representations.