The strategic petroleum reserve has been decreasing since the closure of the Strait of Hormuz. It is now at 283 million barrels (compared to 415 million pre-war). When it will first see a week-on-week increase?

This market resolves based on the values officially reported by EIA -a historical overview is at 

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=WCSSTUS1&f=W

 (will update if the source changes). (will update if the source changes). Market resolves based on the date on the report that first reports a weekly increase (reports are typically published with a few days delay).

Historical trend as of market creation (note that this is in thousands of barrels)