unlike the summer, I'm the moon, I'll bring the sun down

do you mind if i date this to take place close to nightfall on 8/19/2015?

 
Overcast as it’d been all day, the sky was slowly but surely darkening as nightfall approached. And where the sun made its retreat, Sien followed, making her way through the exposed tarns where little shelter was to be had.
 
Eventually, she reached the edge of what appeared to be a sizable, densely packed forest, and after casting her eyes upwards to catch one last glimpse of the Creator's soft glow, she entered it. It was considerably dimmer inside, under the network of intertwined branches at the height of their summer’s growth and as Sien ventured deeper into its heart, she soon found herself missing even what little light the cloud-burdened skies had afforded. And yet, in spite of her clear preference for illumination, she neither hated nor feared darkness – its cover had been a faithful friend far too frequently in the past to inspire any animosity.
 
She was shortly reminded, however, that darkness favored no one; that its services were available to all and sundry. When the faint but distinctive scent of another canine wafted across her path as she paused to inspect a collection of fallen logs, Sien froze. Her muscles tightened in preparation for potential ambush and her nostrils flared, seeking more information. Whoever it was, they were nearby, but the forests' many aromas masked them well enough that she couldn’t pinpoint their location by smell alone. She scanned the area, but failed to discern their figure from the flickering, deepening shadows. ”Who’s there?” She demanded, a clear edge sharpening her tone.