Just a place to start, dice allig If the start event date/time is 21st of May at 9:30 and if offset days are defined as 2 days and the time is set to '18:00' then, the offset date/time will become 23rd of May at 18:00.

If no override definition matches with a given offset and start event date/time, then OTM will get the day of the week of the start event date and check if it matches any day of week defined in the offset definition. If so, it will take the offset days defined for it and append it to the start event date/time, and it will set the time to the offset time defined.

Finally, if no **override definition***?? matches, OTM will return the given start event date/time as offset date/time without any change.

Integration to the offset definition is done while defining the demurrage rules. This is used while determining the dwell days and free days while calculating demurrage charges.

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Note added at 1 day 8 mins (2023-07-09 03:35:48 GMT)
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links
https://docs.oracle.com/en/cloud/saas/transportation/23b/otm...
special jargon about Counter trades and counter offsets??
https://www.econbiz.de/Record/counter-trade-and-the-nigerian...

https://en.wikipedia.org/wiki/Offset_agreement Definition
Offsets can be defined as provisions to an import agreement, between an exporting foreign company, or possibly a government acting as intermediary, and an importing public entity, that oblige the exporter to undertake activities in order to satisfy a second objective of the importing entity, distinct from the acquisition of the goods and/or services that form the core transaction. The incentive for the exporter results from the conditioning of the core transaction to the acceptance of the offset obligation.[3]

Often, the proclaimed aim of this process is to even-up a country's balance of trade.[4] However, some forms of offsets transactions do not represent trade flows going from the initial importer towards the initial exporter. Offsets are frequently an integral part of international defense contracts.[5 Es gibt auch auf Deutsch. Kompensationsgeschäft
Als Kompensationsgeschäft (oder Kompensationshandel; englisch counter trade oder barter) werden in der Wirtschaft Handelsgeschäfte bezeichnet, bei denen Waren oder Dienstleistungen nicht ausschließlich mit Geld bezahlt werden müssen, sondern als Gegenleistung ganz oder teilweise mit anderen Waren oder Dienstleistungen beglichen wird.

engllisch, es ist gleich, no es igual en contenido One of the collateral benefits of offsets in U.S. (probably not offsetting the adverse effects of defense offsets on economy and jobs) is the proliferation of legal and economic jobs in the "offsets sector," that goes from international legal companies to the fully staffed international offices of U.S. defense companies. In addition, the establishment of new companies in "offset" venture capital, in "offset" marketing assistance: offset fulfillers that provide their support services to the defense and aerospace industry. While many offset programs originally evolved as a result of defense and aerospace sales, today many new offset / Industrial Partnership programs have developed as a result of nations wanting to improve their industrial base, level of technology and desire to become more self-sufficient across a broad range of industry sectors. As a result of this new interest and demand for Industrial Partnership, there has been both a growth and establishment of new offset associations. There are both Global and Domestic "Offset" / Industrial Partnership organizations. The largest and most widely attended global association is GOCA, the Global Offset and Countertrade Association,