I found a couple of small spiders sitting close to some eggs as dusk set in last night!
Depending on when fertilisation took place, if the eggs are to hatch, it should be within three to four days, apparently. The eggs will turn orange prior to hatching and some will be infertile.
The citrus received a good watering on Wednesday night prior to eggs being laid. All I can do, I suppose, is to keep the soil damp to maintain a bit of humidity.