In Texas, most Butterflies peak in activity in March and April, with a secondary peak in September through November. But some do the reverse. Interesting stuff from iNaturalist — as of 17 July 2022, of course. Here, for example, is the Common Buckeye in the US; click on “Filter by Place,” then select “Texas,” to see Common Buckeye observations in Texas. Or you could even drill down to the county or city level.