Database Date Field Naming Convention

I use a simple naming convention for most of my date fields:

{Past Tense Action Verb}On   -- Date only fields
{Past Tense Action Verb}At   -- Date/time fields

This tells me at a glance whether a field contains:

It also informs me of the user action that corresponds with the date/time value.

Let's say I want to keep track of when a user marked a record as inactive. I would use one of the following field names:

What's your preferred date field naming convention? Let me know in the comments below.