Dutch for "Tuesday". The day after Monday — the day the week actually starts. The thing you can't avoid; the thing nobody celebrates. I picked the name when I needed a domain and "Tuesday" was already a Slack competitor.
It also looks correct in monospace, in small caps, in lowercase, on a label printer, on a contact sheet. dinsdag. Five consonants, two vowels, no clever spellings. Two TLDs to play with — .xyz for code, .ooo for the photographs. Two halves of a Tuesday.