Indoor plants, I wouldn't think it mattered to much, morning or evening, as long as the pots were lite weight.
The old Farmers Almanac, lol, which alot of the vegatable gardens, farmers are where we live, believe in, say to water them in the morning, it's hot as hell, down here where we live,
I know we've watered our vegatable gardens, morning an evening, when it was much cooler.